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Hiking trails & Routes
United States
Maryland
Montgomery County

Triadelphia Reservoir Trail

Moderate

3.4

(3)

36

hikers

Triadelphia Reservoir Trail

03:38

14.0km

80m

Hiking

Explore the Triadelphia Reservoir Trail, a moderate 8.7 miles (14.0 km) hike that offers a peaceful escape into nature. You will gain 255 feet (78 metres) over an estimated 3 hours and 37 minutes, following a path that meanders through lush woodlands. Enjoy serene views of the Triadelphia Reservoir, especially…

Last updated: April 23, 2026

Waypoints

A

Start point

Parking

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1

2.09 km

Triadelphia Reservoir

Highlight • Lake

At this point you'll get a lovely view of the reservoir amongst the trees. The formation of the reservoir dates back to 1943 when the Brighton Dam was built on the Patuxent River.

Tip by

2

4.22 km

Triadelphia Reservoir Trail

Highlight (Segment) • Trail

This trail follows along the western edge of the water and offers a gently undulating walk with intermittent views over the water.

It's usually quiet so you have a chance to spot some wildlife.

Tip by

B

14.0 km

End point

Parking

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Way Types & Surfaces

Way Types

14.0 km

Surfaces

14.0 km

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Elevation

Elevation

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Weather

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Today

Friday 10 July

30°C

21°C

81 %

Additional weather tips

Max wind speed: 12.0 km/h

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Frequently Asked Questions

Where can I park to access the Triadelphia Reservoir Trail?

While specific parking areas aren't detailed, the trail is part of the larger Triadelphia Reservoir Recreation Area. Access points are typically found around the reservoir, managed by WSSC Water. It's advisable to check the WSSC Water website or local maps for designated parking lots near trailheads.

Is the Triadelphia Reservoir Trail dog-friendly?

Yes, dogs are generally permitted on the trails within the Triadelphia Reservoir Recreation Area. However, they must be kept on a leash at all times, and owners are responsible for cleaning up after their pets. Always follow local regulations.

What is the best time of year to hike the Triadelphia Reservoir Trail?

The trail offers a pleasant experience year-round. Spring brings lush greenery and blooming wildflowers, while autumn showcases vibrant fall foliage. Summer is great for enjoying the water views, though it can be warmer. Winter hiking is also possible, offering a different, serene perspective, especially after a fresh snowfall.

Do I need a permit to hike or use the Triadelphia Reservoir Recreation Area?

Yes, a Watershed Use Permit fee is required for most recreational activities within the Triadelphia Reservoir Recreation Area, including hiking, fishing, and boating. You can typically purchase these permits through WSSC Water, which manages the area.

What is the terrain like on the trail?

The terrain is primarily natural, consisting of exposed soil, rock, and leaf litter. While generally low to flat, there are short segments with steeper grades. The path follows the western edge of the Triadelphia Reservoir, offering intermittent water views amidst wooded areas.

Is the trail suitable for beginners or families?

The Triadelphia Reservoir Trail is considered a moderate hike. While it requires good fitness, the paths are mostly accessible. Sure-footedness is required on some sections due to the natural terrain. Families with older children who are accustomed to longer walks should find it enjoyable.

What kind of wildlife can I expect to see along the route?

The area is rich in wildlife. You might spot various bird species, including herons along the shorelines of the Triadelphia Reservoir, as well as deer in clearings. Keep an eye out for other forest animals in their natural habitat.

Are there any historical points of interest along the trail?

Yes, the reservoir area has a fascinating history. The town of Triadelphia was flooded to create the reservoir in 1943. During periods of low water, historical ruins of the former mill town, including foundations, have been exposed, offering a glimpse into the past.

Are there other recreational activities available at Triadelphia Reservoir?

Beyond hiking, the Triadelphia Reservoir Recreation Area offers a variety of other activities. These include fishing, kayaking, canoeing, and picnicking. Remember that a Watershed Use Permit is required for most recreational activities.

What should I bring for a hike on this trail?

For a moderate hike of this length (approximately 14 km), it's recommended to bring plenty of water, snacks, appropriate hiking footwear, and weather-appropriate clothing. Sunscreen and insect repellent are also advisable, especially during warmer months. Don't forget your Watershed Use Permit!

Are there any amenities like cafes or restrooms directly on the trail?

The Triadelphia Reservoir Trail itself is primarily a natural hiking path, so direct amenities like cafes or public restrooms are not typically found along the route. It's best to plan accordingly and use facilities at designated access points or nearby towns before or after your hike.

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