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Fairfax County

Sandy Run Regional Park

Routes
Hikes
Fairfax County

Sandy Run Regional Park

The best family-friendly hikes and walks in Sandy Run Regional Park

4.3

(77)

475

hikers

25

hikes

Family friendly hiking trails in Sandy Run Regional Park are primarily found within the broader regional park system, particularly in the adjacent Fountainhead Regional Park. The area is characterized by mature deciduous forests and paths that follow the shoreline of the Occoquan Reservoir, a significant natural feature. Hikers can expect varied terrain, including hills, dense woodlands, and streams that flow into the Potomac River. The landscape offers a mix of flat, forested trails and routes with gullies and switchbacks.

Best…

Last updated: July 9, 2026

#1.

Bull Run Occoquan Trail

11.2km

03:05

170m

190m

Embark on the Bull Run Occoquan Trail, a moderate hiking route spanning 7.0 miles (11.2 km) with an elevation gain of 574 feet (175 metres). You can expect to complete…

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Moderate

4.0

(2)

12

hikers

21.2km

05:46

310m

310m

Embark on the Bull Run Occoquan Trail for a challenging hike through diverse woodlands and along the scenic Bull Run and Occoquan Reservoir. This difficult route spans 13.2 miles (21.2…

Hard
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4.9

(12)

55

hikers

6.63km

01:43

40m

40m

The Lake Mercer loop is a fantastic option for a relaxed outing, offering continuous lake views and a pleasant mix of shaded wooded paths and open sections. This easy 4.1-mile…

Easy

5.0

(1)

9

hikers

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Tips from the Community

Paul Sheehan
August 23, 2025, Lake Mercer

Lake Mercer Park Loop offers an enjoyable hiking and bike experience with its combination of paved and gravel paths. You’ll find occasional side trails that lead to the lake by dirt paths, all boasting stunning views. This easy trail features several potential exit points near residential areas. As of 2025, T-Mobile users may experience low but existing cell phone coverage, here. Among the points of interest are a couple of bridges crossing creeks, the lake itself, a large dam, and facilities conveniently located near the parking area. This trail attracts hikers, cyclists, and joggers alike. If you decide to bring your dog, be sure to keep it leashed at all times, as per park regulations, as there are other dogs. This loop is perfect for testing out new gear and for core strength training in preparation for larger trips.

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Krista
February 17, 2025, Lake Mercer

Relatively easy hike. mostly paved and some gravel trails

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0

Easy hike in the forest.

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0

Interesting old cemetery belonging to a few families.

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0

Great view of lake with benches to rest.

0

0

A flat, forested trail that is easy to follow. You can choose to turn right to explore a more secluded and wooded area of Occoquan Reservoir or continue on to the Bun Run-Occoquan Trail. The trail features a few stream crossings, some of which are connected by wooden bridges.

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0

Fountainhead Regional Park's mountain bike trails offer nearly 15 miles of single-use loops with features like steep climbs, rock gardens, and fast descents. The trail system includes beginner, intermediate, and advanced loops, with the black loop featuring rock step-ups, wooden turns, and jumps. Trails are directional, designed for clockwise travel only, and helmets are required here. The park closes at dark or when the trail is wet. Managed by NVRPA, the park’s trail was developed through partnerships and has earned a reputation as some of the area's most challenging rides.

0

0

Nice place to walk, you can rent a boat as well.

1

0

Frequently Asked Questions

How many family-friendly hiking trails are available in the Sandy Run Regional Park area?

The Sandy Run Regional Park area, particularly within the broader Fountainhead Regional Park network, offers a wide variety of family-friendly hiking options. You'll find over 20 routes suitable for families, with 15 of these being easy and 8 considered moderate.

What kind of landscapes can we expect on family hikes near Sandy Run Regional Park?

Family hikes in this area wind through beautiful mature deciduous forests and often follow the scenic shoreline of the Occoquan Reservoir. You can expect varied terrain, including gentle hills, dense woodlands, and paths that cross streams, sometimes via charming wooden bridges. The views of the reservoir are a highlight.

Are there any easy loop trails suitable for families with younger children?

Yes, there are several easy loop trails perfect for families. For instance, the Lake Mercer loop offers a pleasant 6.6 km walk with minimal elevation gain. Another great option is the Walkway Over the Dam loop from South Run, which is about 6.2 km and also considered easy.

What do other hikers enjoy most about the family-friendly trails in Sandy Run Regional Park?

The komoot community highly rates the family-friendly trails in the Sandy Run Regional Park area, with an average score of 4.7 stars from 75 ratings. Reviewers often praise the peaceful forest settings, the scenic views of the Occoquan Reservoir, and the well-maintained paths that make for an enjoyable outing with children.

Can we bring our dog on the family-friendly hiking trails?

Yes, many trails in the broader Sandy Run Regional Park area, including those within Fountainhead Regional Park, are dog-friendly. Please ensure your dog is kept on a leash and that you clean up after them to preserve the natural environment for everyone.

Are there any longer, moderate family hikes for older children or more active families?

For families looking for a bit more of a challenge, the Historic Family Cemetery – Fountainhead Regional Park loop is a moderate 10.3 km route that offers varied terrain and interesting historical context. Another option is a section of the Bull Run Occoquan Trail, which provides a moderate 11.2 km experience through the forest.

What is the best time of year to visit Sandy Run Regional Park for family hiking?

The area is beautiful year-round. Spring brings lush greenery and wildflowers, while autumn offers spectacular fall foliage. Summer is great for shaded forest walks, and even mild winter days can be pleasant for a quiet hike. Always check local weather conditions before heading out.

Are there any specific points of interest or landmarks to look out for on these trails?

While Sandy Run Regional Park itself is primarily focused on rowing, the adjacent Fountainhead Regional Park trails offer natural beauty and some historical elements. You'll enjoy the scenic views of the Occoquan Reservoir, the mature forests, and the occasional stream crossings. The Historic Family Cemetery loop, for example, hints at the area's past.

Is parking available for hikers accessing trails near Sandy Run Regional Park?

Yes, parking is generally available at trailheads within the broader regional park system, particularly at Fountainhead Regional Park, which offers the most accessible hiking opportunities. It's advisable to check specific park websites for detailed parking information and any potential fees.

Are the trails suitable for strollers or wheelchairs?

While many trails are well-maintained, the varied terrain, including hills, gullies, and stream crossings, means that most are not suitable for standard strollers or wheelchairs. Some flatter, paved sections might exist in certain areas, but for dedicated stroller-friendly or accessible trails, it's best to consult specific park resources for the most up-to-date information.

What should we wear for a family hike in this region?

We recommend wearing comfortable, layered clothing suitable for the weather conditions. Sturdy, closed-toe shoes are essential, as trails can be uneven. Bringing water, snacks, sun protection, and insect repellent is also a good idea, especially during warmer months.

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