Lost Lake – Patapsco Valley State Park loop from Ellicott City
Lost Lake – Patapsco Valley State Park loop from Ellicott City
2.6
(13)
87
runners
02:28
22.4km
150m
Running
Hard run. Very good fitness required. Mostly accessible paths. Some sure footedness required. The starting point of the route is right next to a parking lot.
Last updated: April 20, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Waypoints
Start point
Parking
Get Directions
3.99 km
Highlight • Bridge
Tip by
4.85 km
Highlight • Monument
Tip by
6.03 km
Highlight • Bridge
Tip by
8.33 km
Highlight • Lake
Tip by
16.5 km
Highlight • Bridge
Tip by
19.5 km
Highlight • Forest
Tip by
21.0 km
Highlight • Historical Site
Tip by
22.4 km
End point
Parking
Way Types & Surfaces
Way Types
6.74 km
5.59 km
4.56 km
3.94 km
821 m
558 m
206 m
Surfaces
14.0 km
5.28 km
1.34 km
858 m
685 m
201 m
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Elevation
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Weather
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Today
Wednesday 15 July
38°C
21°C
0 %
Additional weather tips
Max wind speed: 19.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Description
If you're looking for a challenging and diverse jogging experience near Ellicott City, the Lost Lake – Patapsco Valley State Park loop delivers. This difficult 13.9-mile (22.4 km) route, with 498 feet (152 metres) of elevation gain, can be completed in an estimated 2 hours and 28 minutes, making it a rewarding option for those with good fitness seeking varied terrain and historical sights.
What to expect on Lost Lake – Patapsco Valley State Park loop from Ellicott City
This route takes you on a journey through the heart of Maryland's oldest state park, offering a mix of rugged natural-surface trails and some easier, paved sections. You'll jog alongside the winding Patapsco River, passing through lush forests and encountering picturesque spots like Cascade Falls. Keep an eye out for the historic remnants of the Avalon Dam and the Grist Mill Trail, which offers close-up views of the river and leads to the iconic Swinging Bridge in the Orange Grove Area. While some parts are relatively flat, expect significant ups and downs, especially on sections leading towards Cascade Falls, requiring sure-footedness and a decent level of fitness.
Planning your visit
Patapsco Valley State Park is easily accessible from Ellicott City and offers a feeling of being far from civilization despite its proximity to Baltimore. While specific parking details aren't provided, plan to arrive early, especially on weekends, as popular trailheads can fill up. The park is beautiful year-round, but spring and fall offer pleasant temperatures and vibrant scenery. Always carry enough water, especially during warmer months.
Trail details
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