When do the passes open?
Ouray County starts clearing the high roads in May and aims to have them open by July 4. The highest passes usually run early July to late September. When to go →
Can I drive my side-by-side in Ouray?
Not on Ouray's streets or on US 550. Unload at the Horseshoe Bend staging lot just south of town. Ouray County roads are fine with a Colorado OHV permit. Rules and permits →
Do I need a permit if my vehicle is registered in another state?
Yes for side-by-sides, ATVs and dirt bikes: Colorado doesn't recognize out-of-state OHV registrations. Street-legal 4x4s also need the permit on designated off-highway trails. Rules and permits →
Can I ride a side-by-side into Telluride?
No. Telluride doesn't allow unlicensed off-highway vehicles on its streets, so plan to trailer out from Black Bear or Imogene, or turn around. Telluride for off-roaders →
Can side-by-sides ride through Lake City on the Alpine Loop?
Yes. Lake City allows them on town and county roads, and from June 1 to September 30 on a 3.26-mile stretch of Highway 149 that connects the loop's two branches. Lake City for off-roaders →
Will I have cell service on the trails?
Usually not. Download maps before you go and carry a satellite messenger if you can. Safety and maps →
When should we be off the passes?
Thunderstorms usually build after 11 a.m. in summer, so start early and aim to be heading down by late morning. Safety and maps →
When are the fall colors?
Usually mid-September to early October around Ouray, with each grove holding color for about a week. Fall colors →
More in Plan a trip
When to go
Pass seasons, month-by-month weather, and the week ahead at the summits.
ReadFall colors
When the aspens usually peak, and the drives that show them off.
ReadRules and permits
Permits, where side-by-sides can ride, and one-way rules.
ReadSafety and maps
Altitude, lightning, shelf-road etiquette, and offline maps.
Read