551 official trails lie within 25 miles of Manassas — 1,745 miles in total, 458 rated easy and 31 hard or expert. Every distance and elevation figure below is computed from the agency centerline and a 10 m elevation model, not crowd-sourced.
The biggest climb nearby gains 455 ft; the median trail gains 78 ft.
| Trail | Miles | Climb | Difficulty | From town |
|---|---|---|---|---|
| Loudoun County Trails | 16.1 | 396 ft | Expert | 20 mi |
| Prince William County Trails | 12.1 | 208 ft | Expert | 16 mi |
| Bull Run Occoquan Trail | 18.9 | 151 ft | Expert | 4 mi |
| Fairfax County Trail | 9.7 | 174 ft | Expert | 14 mi |
| Potomac Heritage National Scenic Trail | 10.3 | 264 ft | Hard | 25 mi |
| C-Request | 38.0 | 335 ft | Hard | 22 mi |
| Virginia Railroad Express Trail | 16.4 | 329 ft | Hard | 15 mi |
| Potomac Heritage Trail | 9.7 | 260 ft | Hard | 23 mi |
| Alexandria Trails | 61.2 | 275 ft | Hard | 23 mi |
| Custis Trail | 14.4 | 309 ft | Hard | 12 mi |
| W&od Rr Trail | 24.8 | 251 ft | Hard | 16 mi |
| South Valley Trail | 7.9 | 305 ft | Hard | 14 mi |
| Bull Run-Occoquan Trail | 6.7 | 173 ft | Hard | 8 mi |
| Road Row | 5.8 | 170 ft | Moderate | 22 mi |
| Cross County Trail | 6.9 | 193 ft | Moderate | 13 mi |
| Fountainhead Equestrian Trails | 5.2 | 148 ft | Moderate | 10 mi |
| Mount Vernon Trail | 10.0 | 86 ft | Moderate | 23 mi |
| Arlington Blvd Sidepath | 7.5 | 148 ft | Moderate | 14 mi |
| Laurel Hill Equestrian Area Shared-Use Trails | 5.6 | 79 ft | Moderate | 13 mi |
| Pohick Stream Valley Trail | 6.0 | 155 ft | Moderate | 11 mi |
| Green Loop | 4.8 | 142 ft | Moderate | 15 mi |
| Manassas Park Trails | 2.5 | 125 ft | Moderate | 3 mi |
| Bull Run Overlook | 5.0 | 149 ft | Moderate | 14 mi |
| Ox Road Sidepath | 7.3 | 174 ft | Moderate | 13 mi |
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