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What can you ride on Tres Rios Field Office routes?
How many of Tres Rios Field Office's published BLM routes list your vehicle, and any limits in BLM's own words.
Tres Rios Field Office routes by vehicle
47 mi of published routes in Colorado, BLM file as of September 2026.
| Vehicle | Routes list it | Street-legal only | BLM does not say |
|---|---|---|---|
| ATV | 43 mi | 0 mi | 0 mi |
| Side-by-side (UTV) | 35 mi | 0 mi | 0 mi |
| Motorcycle (dirt bike) | 43 mi | 0 mi | 0 mi |
| Street-legal 4x4 | 25 mi | 0 mi | 0 mi |
Street-legal 4x4 · Tres Rios Field Office
Most routes list it25 mi of Tres Rios Field Office's 47 mi of published routes list street-legal 4x4s.
- List your vehicle 25 mi
- Vehicle limit in BLM's words 3 mi
- List other vehicles 19 mi
5 mi of the routes that list your vehicle carry a seasonal restriction from BLM. BLM's file does not word those dates, so ask the field office.
3 mi are marked for all vehicles, but BLM narrows them in its own words. Read those lines below.
1 mi are technical or high-clearance 4x4 routes, which a stock truck may not make.
Routes with limits, in BLM's words (2)
- Mud Springs Rock Crawler Trail · 1 mi · Technical and high-clearance 4x4s only"Rock Crawler"
- Route 4100 · 0 mi · All motorized vehicles"Open to Motorized"
Source: Bureau of Land Management. Not a legal document or land survey. Check with the BLM field office and posted signs before you ride.
- BLM's own route file
- Your vehicle, every field office
- Limits in BLM's words
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