Lonesome Highway — Centennial Road to Chico Basin via the Wet Mountains Piedmont Bench
Forgotten Colorado piedmont where the mountains meet the plains.
Between Pueblo and the Wet Mountain Valley, a series of county roads and BLM two-tracks cuts across the eastern piedmont of the Wet Mountains — shortgrass prairie, isolated ranch gates, and sudden volcanic intrusions poking through the grassland floor. The route runs south from the Rye area along the mountain’s rain shadow, crossing arroyos and dry creek draws that carry real water during spring runoff and monsoon. Greenhorn Mountain sits to the west above 12,000 feet, close enough to put weather on you fast. The Chico Basin end drops onto classic eastern Colorado flatland where pronghorn outnumber people by about a thousand to one.
Surface is county dirt and ranch road — usually passable in a high-clearance 2WD in dry conditions, but the clay-heavy arroyos turn to wheel-sucking mud after any significant rain. A 4WD with good all-terrain tires is the right call unless you’ve recently checked conditions with the Pueblo County road department. Best season is May through June and September through October — midsummer monsoons and late-season snow both close sections unpredictably. No permit needed; most land is BLM or state. No services between Rye and Pueblo West — fuel up before you leave. This is the kind of driving that reminds you Colorado isn’t all ski towns and fourteeners.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | High Clearance, Overland Route |
| Surface | Dirt, Gravel, Mixed |
| Features | Camping, Remote, Scenic |
| Length (miles) | 42 mi / 67.6 km |
| Duration | 1 day |
| Max elevation (ft) | 6400 ft |
| Best season | May-June, September-October |
| Minimum vehicle | High-clearance recommended, 4WD preferred |
| Nearest town | Rye, CO |
| Land manager | BLM Royal Gorge Field Office |
| Permit required | No |
| Cell service | Spotty |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | BLM Royal Gorge Field Office |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a stock Tacoma or 4Runner handle this trail without modifications?
Yes, a stock high-clearance truck or SUV handles this trail fine under normal conditions. 4WD is preferred for soft spots and any wet sections, but the moderate rating means it's not a locker-required situation. Lowered vehicles or cars will have a bad time.
When is this trail passable and what shuts it down?
Best windows are May–June and September–October. Summer monsoons can turn the clay-heavy dirt sections into a greasy mess that'll swallow you, and winter snow on the piedmont bench can linger and make navigation sketchy. Check conditions with the BLM Royal Gorge Field Office before heading out.
Do I need a permit or is there a fee to run this route?
No permit required and no fee for driving the route. It crosses BLM land managed by the Royal Gorge Field Office — dispersed camping is allowed per standard BLM rules, meaning 14-day stay limit and 200 feet from water, roads, and trails.
What's the hardest section and what makes it sketchy?
The most demanding stretches come where the route dips through drainages and creek crossings on the piedmont bench — these can get rutted and soft after rain. Nothing technically gnarly by Colorado standards, but a water crossing in the wrong conditions after a monsoon can catch you off guard on what looks like a mellow run.
How far is the nearest gas station and should I top off before starting?
Top off in Pueblo before heading south — it's the last reliable fuel stop. Rye is the nearest town but don't count on it for fuel. At 42 miles of driving plus your approach, you want a full tank; cell service is spotty throughout, so a breakdown without fuel out here means a long wait.
Trail track
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