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Routes
Mountain biking trails
United States
California
Los Angeles County
Altadena

Mount Lowe and Echo Mountain Loop

Hard

3.5

(3)

72

riders

Mount Lowe and Echo Mountain Loop

03:33

26.0km

1,220m

Mountain biking

Mountain bike the challenging 16.2-mile Mount Lowe and Echo Mountain Loop, featuring historical ruins and panoramic views of Los Angeles.

Last updated: February 26, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 11.7 km for 338 m

Waypoints

A

Start point

Parking

Get Directions

1

12.2 km

Mt. Lowe East Trail

Highlight (Segment) • Trail

A great singletrack that winds around the East side of Mt. Lowe and then descends the South face.

Tip by

2

15.3 km

Middle Sam Merrill Trail

Highlight (Segment) • Trail

Tight, rocky, and exposed—this one’s a classic if you like your rides technical. The climb is tough, but the views are worth it. Watch for hikers, take the switchbacks, and …

Tip by

3

16.5 km

Mt. Lowe Observatory Ruins and View

Highlight • Historical Site

A series of disasters has eroded the properties in this area. In 1900, a kitchen fire destroyed the main house, and in 1905, another fire consumed the remaining structures. From …

Tip by

B

26.0 km

End point

Parking

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Way Types & Surfaces

Way Types

13.2 km

9.08 km

3.67 km

< 100 m

Surfaces

9.70 km

4.53 km

4.11 km

3.96 km

3.67 km

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (1,450 m)

Lowest point (410 m)

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Weather

Powered by Foreca

Today

Wednesday 6 May

21°C

9°C

0 %

Additional weather tips

Max wind speed: 11.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the overall difficulty of the Mount Lowe and Echo Mountain Loop for mountain biking?

This loop is considered difficult to expert level for mountain biking. It features steep climbs, technical descents, and a mix of surfaces, including fire roads and rocky singletrack. Riders should be prepared for a significant uphill battle, with some sections involving hard scrambling over loose rock and gravel.

How long does it typically take to complete this mountain biking loop?

The Mount Lowe and Echo Mountain Loop is approximately 26 kilometers (16 miles) long. With an elevation gain of over 1200 meters (4000 feet), it typically takes around 3 hours and 30 minutes to complete, depending on your pace and stops.

Where can I park to access the Mount Lowe and Echo Mountain Loop?

Parking is available near the trailheads in Altadena. Be aware that parking within the Angeles National Forest often requires a National Forest Adventure Pass. Check local signage for specific parking regulations and permit requirements.

Do I need a permit or pay an entrance fee to ride this trail?

Yes, as this trail is located within the Angeles National Forest, you will likely need a National Forest Adventure Pass for parking. These passes can be purchased at ranger stations, visitor centers, or authorized vendors. Always check the latest regulations before your visit.

What kind of views can I expect along the route?

The trail offers grand and sweeping views that improve with altitude. You'll be treated to panoramic vistas of Altadena, Pasadena, and the Los Angeles skyline. From Inspiration Point, you can see Echo Mountain and the rugged, green peaks of the San Gabriel Mountains. Wildflowers also add to the scenic beauty at higher elevations.

Are there any historical landmarks or points of interest along the trail?

Absolutely! This trail is rich in history, particularly its connection to the Mount Lowe Railway. You can explore the ruins of the Echo Mountain House, the Echo Mountain Chalet, and the observatory. Don't miss the Mt. Lowe Observatory Ruins and View, which offers a glimpse into a bygone era of mountain tourism.

Is the Mount Lowe and Echo Mountain Loop dog-friendly?

Yes, dogs are generally allowed on this trail. However, they must be kept on a leash at all times to protect wildlife and ensure the safety of other trail users. Please remember to pack out all pet waste.

What is the best time of year to mountain bike this loop?

The best time to ride this loop is typically during the cooler months, from late fall through spring. Summer can be very hot, especially on exposed sections. Spring offers the chance to see wildflowers, while fall provides pleasant temperatures and clear views. Always check weather and trail conditions before heading out.

What is the terrain like on the Mount Lowe East Trail and Middle Sam Merrill Trail sections?

The Mt. Lowe East Trail is described as rocky, technical, and somewhat loose, with tight switchbacks and considerable exposure. The Middle Sam Merrill Trail also contributes to the challenging nature of the loop, featuring varied surfaces from fire roads to singletrack.

Does this route intersect with other trails in the area?

Yes, the route utilizes and intersects with several other trails. Notable sections include the Mount Lowe Motorway, Middle Sam Merrill Trail, Sunset Ridge Trail, Mount Lowe Railway Trail, and Chaney Trail, among others. This allows for various route combinations and access points.

Are there any specific challenges or insider tips for mountain biking this loop?

Be prepared for a significant and sustained climb, particularly on the fire road sections. The Mount Lowe East Trail has technical, rocky, and loose sections with tight switchbacks, requiring advanced riding skills. It's advisable to start early to avoid heat and crowds, and always be mindful of hikers, as this is a popular multi-use trail.

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