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Montana

Helena-Lewis And Clark National Forest

Routes
MTB trails
United States
Montana

Helena-Lewis And Clark National Forest

The best MTB trails in Helena-Lewis And Clark National Forest

By Fede from komoot

·

Updated May 10, 2026

If you've ever tried to plan mountain biking in Helena-Lewis And Clark National Forest, you know how overwhelming the options can be. With so many trails spanning such a vast area, it's tough to tell which routes are genuinely worth your time and effort. That's where we come in: our komoot community has ridden, mapped, and reviewed these trails, so we've curated a shortlist of the very best to save you the guesswork.

Mountain biking here feels like a true Montana adventure, with diverse landscapes ranging from open meadows and dense ponderosa pine forests to rugged island mountain ranges like the Big Belt and Little Belt. You'll find everything from moderate loops to challenging technical climbs, often connecting to the epic Continental Divide National Scenic Trail. Just remember that prime riding conditions typically run from June through October, so plan your trip accordingly.

If you only do one ride, make it the Mount Helena Ridge and Show-Me-The-Horse Loop, a fantastic 9.0 miles (14.5 km) route that offers a perfect blend of scenery and flow. For something a bit shorter but still packed with fun, the 5.3 miles (8.5 km) Entertainment and Aftershock Loop is a local favorite. With more than 100 mountain bikers already exploring these trails with komoot, you're in good company.

If you only do 3 of these routes

  1. 1

    Mount Helena Ridge and Show-Me-The-Horse Loop
  2. 2

    Entertainment and Aftershock Loop
  3. 3

    Lava Mountain loop

Compare these routes at a glance

Trail

Distance

Elevation

Difficulty

Mount Helena Ridge and Show-Me-The-Horse Loop

14.5 km

410 m

Moderate

Entertainment and Aftershock Loop

8.50 km

340 m

Moderate

Lava Mountain loop

28.5 km

760 m

Moderate

Lime Kiln Ruins loop from Lime Kiln Ruins

26.8 km

890 m

Moderate

Helena Ridge Trail – Southwesterly Views loop from Mount Helena Ridge Trailhead

24.1 km

600 m

Hard

Mount Ascension: Entertainment and Little Moab Loop

9.85 km

350 m

Moderate

Eddye McClure Loop

11.3 km

350 m

Moderate

1906 and Prospect Shafts Trail Loop

4.99 km

280 m

Easy

Outer Mount Helena loop

7.41 km

290 m

Easy

Lime Kiln Ruins loop from Helena

13.3 km

330 m

Moderate

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1.

Mount Helena Ridge and Show-Me-The-Horse Loop

14.5km

01:35

410m

410m

The Mount Helena Ridge and Show-Me-The-Horse Loop is a local favorite for mountain bikers seeking a dynamic ride with stunning vistas. This moderate 9.0-mile (14.5 km) route takes you through open meadows, where you might spot wildflowers, and into thick pine stands. The highlight is often the Show-Me-The-Horse section, known for its fast, winding descent with berms and small drops that deliver an exhilarating experience.

To tackle this 1333 feet (406 metres) of elevation gain, you can begin at trailheads like McKelvey, or consider using a shuttle service for a point-to-point adventure. The estimated duration for this loop is around 1 hour and 35 minutes, making it a great option for a solid morning or afternoon ride. It's best to visit during the drier seasons to fully enjoy the trail conditions.

This loop is a prime example of Helena, Montana's growing reputation as a mountain biking destination, offering excellent singletrack that caters to intermediate riders. The trail's mix of challenging climbs and fun descents provides a satisfying workout and a true taste of the region's diverse terrain, from rocky sections to smooth, flowing paths.

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2.

Entertainment and Aftershock Loop

8.50km

01:03

340m

340m

The Entertainment and Aftershock Loop offers a high-energy mountain biking experience in Helena, Montana, perfect for riders seeking a quick, exhilarating descent. You'll navigate through diverse scenery, from open meadows to dense fir and pine forests, with glimpses of Mount Ascension along the way. This moderate 5.3-mile (8.5 km) route packs in 1100 feet (335 metres) of elevation gain, making for a fast-rolling and super flowy ride that can be completed in just over an hour.

Planning your ride on this popular multi-user trail means being aware of other trail users. While the route is accessible for much of the year, winter conditions can present challenges with wet mud and ice, so consider studded fat tires if you're riding in colder months. The trail's design, with its

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3.

Lava Mountain loop

28.5km

02:50

760m

760m

The Lava Mountain loop offers a rugged and demanding mountain biking experience, taking you through a landscape dominated by steep 4x4 roads and technical rock gardens. You'll navigate sections of loose rock and sand, deep ruts, and even fallen log obstacles, with a small lake providing a brief scenic respite. This moderate 17.7-mile (28.5 km) route packs in 2506 feet (764 metres) of elevation gain, typically requiring around 2 hours and 50 minutes to complete.

Planning your ride on the Lava Mountain loop means preparing for its challenging nature. Early season conditions can include snow drifts, mud holes, and fallen trees, so checking current reports is essential. Be ready for sections, particularly on the southern end, where the trail becomes so steep and rocky that you'll likely be walking your bike. Riding the loop clockwise is often suggested for a more enjoyable downhill finish.

This trail is a notable segment of the Continental Divide Mountain Bike Race, highlighting its status as an advanced mountain biking trail. It's a true 4x4 trail, featuring significant boulder fields and a notorious "headwall" of rocks that few can ride. Riders should come equipped with robust gear and a readiness for a physically demanding adventure.

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4.

Lime Kiln Ruins loop from Lime Kiln Ruins

26.8km

03:07

890m

890m

The Lime Kiln Ruins loop offers a dynamic mountain biking experience near Helena, Montana, blending fun singletrack with historical exploration. You'll navigate varied terrain, from gravel roads to sections of the Continental Divide Trail, with a notable highlight being the ride over a historic trestle bridge on the Milwaukee Road Railway grade. The route provides a good workout and a chance to immerse yourself in the area's past, making it a solid choice for intermediate riders.

This moderate 16.7-mile (26.8 km) mountain bike route features a significant 2933 feet (894 metres) of elevation gain, typically taking around 3 hours and 6 minutes to complete. While specific parking information for this loop isn't detailed, the Lime Kiln Ruins area is generally accessible. It's advisable to check trail conditions, especially for mud, before heading out, as some related trails can be affected.

The Lime Kiln Ruins themselves are a meaningful cultural heritage site, listed on the National Register of Historic Places, showcasing the region's industrial history of quicklime production. This historical context adds a unique layer to your ride, distinguishing it from purely scenic trails. The blend of challenging riding and historical discovery makes this one of the best mountain bike trails near Lime Kiln Ruins for those who enjoy a ride with a story.

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5.

Helena Ridge Trail – Southwesterly Views loop from Mount Helena Ridge Trailhead

24.1km

02:29

600m

600m

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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6.

Mount Ascension: Entertainment and Little Moab Loop

9.85km

01:08

350m

360m

The Mount Ascension: Entertainment and Little Moab Loop delivers a dynamic mountain biking experience, blending flowy singletrack with technical rock features. You'll climb through wooded slopes, enjoying views over Helena, before descending on the fast-rolling Entertainment Trail through meadows and forests. The highlight for many is the Little Moab Trail, with its unique bare limestone outcrops and rock gardens, offering a technical challenge reminiscent of Utah's famous slickrock.

This moderate 6.1-mile (9.9 km) loop, with 1145 feet (349 metres) of elevation gain, typically takes about 1 hour and 8 minutes to complete. It's part of the Mount Ascension City Park trail system, easily accessible from downtown Helena. Remember, it's mountain bikes only, one-directional, and e-bikes are not allowed. The north-facing wooded climb makes it a good option for warmer afternoons.

What truly sets this trail apart is the combination of classic Mount Ascension riding with two distinct descents. The Little Moab section provides a unique geological experience, while the Entertainment Trail offers pure downhill flow. From the summit of Mount Ascension, you'll be treated to panoramic views in all directions, making the effort well worth it.

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7.

Eddye McClure Loop

11.3km

01:12

350m

360m

The Eddye McClure Loop is a popular mountain biking trail near Helena, Montana, known for its diverse scenery and engaging terrain. As you ride, you'll pass through open ponderosa meadows, wind through beautiful wooded glens, and navigate around dramatic rock outcroppings, offering a constantly changing backdrop. The singletrack trail provides a mix of steady climbs and fun, flowing descents, particularly on the Eddye McClure West section, which features well-flowing tight turns.

This moderate 7.0-mile (11.3 km) loop involves 1144 feet (349 metres) of elevation gain and typically takes about 1 hour and 12 minutes to complete. It's an excellent option for intermediate riders looking for a rewarding outing. While specific parking details aren't provided, it's a well-known local trail, so plan to arrive early on busy days, and always carry enough water, especially in summer.

The Eddye McClure Loop is a gateway to the eastern South Hills trail system, connecting to the broader Mount Ascension Loop and offering opportunities for longer rides. It's notable for honoring Eddye McClure and Mignon Waterman, who were instrumental in its development. This trail is a local favorite, providing a great taste of Helena's extensive mountain biking offerings.

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8.

1906 and Prospect Shafts Trail Loop

4.99km

00:42

280m

290m

The 1906 and Prospect Shafts Trail Loop offers a dynamic mountain biking experience near Helena, blending smooth climbs with technical descents. As you pedal, you'll be treated to spectacular views over the city from Mount Helena, passing by picturesque limestone cliffs and historic mining shafts that add character to the ride. This 3.1-mile (5.0 km) loop, with its 934 feet (285 metres) of elevation gain, is an easy-rated route that feels more like a moderate challenge in sections, especially on the rocky downhill.

Accessing the trail is straightforward from the Mount Helena Trailhead, which provides convenient parking and restrooms. While the estimated duration is a quick 41 minutes, plan for a bit longer if you want to soak in the views or navigate the steep, loose, and rocky sections of the Prospect Shafts Trail carefully. It's best ridden when conditions are dry to ensure good grip on the varied terrain.

This loop is a highlight within Helena's IMBA Bronze Level Ride Center, showcasing the quality of the local trail system. Beyond the ride itself, the area is known for its diverse landscapes, from shaded pine forests to open prairie, and is home to wildlife, including grizzly bears, so always be aware of your surroundings.

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9.

Outer Mount Helena loop

7.41km

00:54

290m

290m

The Outer Mount Helena loop offers a fantastic mountain biking experience, winding through a dynamic landscape of tight coniferous forests and expansive open meadows. You'll be treated to panoramic views of Helena and the distant Little Belt Mountains, especially from spots like the Mount Helena Trail Junction. The terrain varies from smooth singletrack to sections with a bit more challenge, making it an engaging ride for those who appreciate diverse scenery and a good workout.

This easy 4.6-mile (7.4 km) mountain bike route includes 952 feet (290 metres) of elevation gain, typically completed in about 54 minutes. While the Mount Helena area is highly accessible from the city, it's always wise to plan your visit during warmer months to enjoy the abundant wildflowers. Be sure to carry enough water, as some sections can be exposed to the sun.

Helena's trail system, recognized as a bronze-level IMBA Ride Center, provides world-class mountain biking right on the city's doorstep. This loop is a great way to tap into that extensive network, offering a blend of urban proximity and natural beauty. It's a perfect choice if you're looking for a relatively quick ride that still delivers on scenery and a sense of accomplishment.

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10.

Lime Kiln Ruins loop from Helena

13.3km

01:21

330m

330m

If you're seeking a mountain biking route that blends history with scenic vistas, the Lime Kiln Ruins loop near Helena delivers. This trail winds through varied terrain, from tight singletrack with dirt, rocks, and roots, to flowy sections that offer quick descents and short climbs. You'll pass the historic Lime Kiln Ruins, a unique cultural heritage site, and be treated to rewarding views over the Helena Valley and surrounding mountains, making for a truly engaging ride.

This moderate 8.3-mile (13.3 km) mountain biking route involves 1070 feet (326 metres) of elevation gain and can typically be completed in about 1 hour and 21 minutes. The trail is part of the extensive Helena South Hills trail system, offering easy access from town. While generally accessible, be prepared for potential wet mud or hard ice depending on the season, and always check current trail conditions before you go.

The Lime Kiln Ruins area is a highlight of Helena's world-class mountain biking scene, recognized with an IMBA Silver Level Ride Center designation. Beyond the historical kilns, the trails connect to a network that includes Mount Helena and Mount Ascension, featuring natural flow and bike-specific elements like berms. Remember that grizzly bears are present in the area, so riding with others is a good safety practice.

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Tips from the Community

Andrus
January 15, 2025, Helena Ridge Trail

This trail is a true local's favorite for hiking and biking, but there may be safety in numbers as grizzly bear are known to be in the area.

0

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Sue
February 5, 2024, Lime Kiln Ruins

These ruins near Helena are a beautiful testament to the area's rich industrial history. Despite appearing like mining smelters, these kilns produced quicklime from the local limestone before the 20th century. They have been designated as meaningful cultural heritage sites and are listed on the National Register of Historic Places. The city's impressive historic architecture owes much to the early lime industry, and although the kilns may seem sturdy, they are very fragile, so do not climb on or inside them. However, you can always take a moment to appreciate the ruins and capture some great photos.

0

0

Alex
December 14, 2023, Mount Ascension

Mount Ascension is just outside of Helena and gives a nice view of the surrounding natural areas as well as the city. It is a well-maintained trail and open year-round, but in the winter, watch out for ice in the shady areas.

0

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Downtown Helena, famously known as the most historic mile in Montana, is nestled along Last Chance Gulch, right at the foot of the stunning Mt. Helena. Here, you'll find a diverse array of shops offering unique art, clothing, sports gear, and plenty of dining options, including microbreweries and entertainment.

2

0

From the North side of Mount Helena you have excellent views over the Capital City. However, once you make the turn and get behind the mountain the views open up to the spectacular surroundings and invite you to explore some more.

0

0

Lava Mountain Trail is technical enough to challenge most riders. It's also part of the Great Divide Mountain Bike Route so theoretically you could keep riding up to Alberta, Canada or down to the Mexican border.

1

0

Andrus
August 8, 2023, Helena Ridge

This trail is a true local's favorite for hiking and biking, but there may be safety in numbers as grizzly bear are known to be in the area.

0

0

Lots of choices from here. Prospect Shafts, 1906 (uphill only), & Prairie trails are just a few of the options.

0

0

Frequently Asked Questions

How many mountain bike trails are there in Helena-Lewis And Clark National Forest?

Helena-Lewis And Clark National Forest offers a wide selection of mountain biking opportunities, with over 20 routes available on komoot. These trails cater to various skill levels, from moderate loops to more challenging technical routes.

What is the best time of year for mountain biking in Helena-Lewis And Clark National Forest?

The best conditions for mountain biking in Helena-Lewis And Clark National Forest are typically found between June and October. During these months, trails are generally clear of snow and offer optimal riding conditions.

Are there any easy mountain bike trails suitable for beginners?

Yes, there are a few easier options. While most trails are moderate, komoot lists 2 easy routes. For those looking for a less strenuous ride, consider exploring the extensive trail systems in the South Hills, which offer varied terrain.

Are there any challenging mountain bike trails for experienced riders?

Absolutely. For experienced riders seeking a challenge, the forest offers 7 difficult routes. The Lava Mountain loop, for example, is a challenging 17.7-mile trail that is part of the Great Divide Mountain Bike Route and features technical mountain terrain.

Can I find loop trails for mountain biking in the forest?

Yes, many mountain bike routes in Helena-Lewis And Clark National Forest are designed as loops. Popular examples include the Mount Helena Ridge and Show-Me-The-Horse Loop and the Entertainment and Aftershock Loop, which provide varied terrain and scenic views.

What kind of terrain can I expect on the mountain bike trails?

The terrain in Helena-Lewis And Clark National Forest is incredibly diverse. You can expect a mix of open meadows, dense ponderosa pine forests, wooded gullies, and even alpine peaks along the Continental Divide. Trails range from smooth singletrack to technical climbs and descents.

Are e-bikes allowed on the mountain bike trails?

E-bikes are permitted on all motorized trails and roads within the Helena-Lewis and Clark National Forest, provided they adhere to regulations classifying them as motorized vehicles. However, e-bikes are prohibited in Wilderness Areas and on trails designated solely for pedestrian, bicycle, or horseback use.

What natural features or landmarks can I see while mountain biking?

The forest is rich in natural beauty and historical sites. You can encounter sections of the Continental Divide National Scenic Trail, explore the Bob Marshall Wilderness, or pass by the Lava Mountain Trail. The region also features island mountain ranges like the Big Belt Mountains and numerous rivers.

Are there any family-friendly mountain biking options?

While specific family-friendly routes are not explicitly detailed, the South Hills Trail System near Helena offers approximately 50 trails with varying difficulty and length, providing options that could be suitable for families. Look for routes designated as 'easy' on komoot for a gentler experience.

Where can I find parking and trailheads for mountain biking?

The South Hills Trail System, located south of Helena, is a major hub for mountain bikers and offers numerous access points. For trails along the Continental Divide, access points are available from passes like Rogers, Flesher, Macdonald, and Stemple Pass. Specific parking details are often available on individual route pages.

What other activities can I do in Helena-Lewis And Clark National Forest besides mountain biking?

Beyond mountain biking, the forest offers a wide array of outdoor activities. You can enjoy hiking, fishing, horse riding, camping, hunting, and winter sports like cross-country skiing and snowshoeing. There are also opportunities to explore historic sites and various developed campgrounds or primitive backcountry sites.

Are there any specific regulations or permits needed for mountain biking?

Generally, no specific permits are required for mountain biking on most trails within the Helena-Lewis and Clark National Forest. However, it's always advisable to check the latest regulations from the U.S. Forest Service, especially concerning e-bike use or access to specific wilderness areas.

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