This popular summer destination has around 65 miles of designated motorized trails with plenty of side roads that wind through the San Juan Mountains. The trail system mainly consists of old mining roads that wind near abandoned mines, railroads, mills, and ghost towns, providing visitors a glimpse into the areas history. The trail system has five designated staging areas and several RV campgrounds that provide direct trail access. There are plenty of primitive campgrounds with direct trail access that charge a small fee but free camping can be found at Lost Trail Campground. The area is very popular with Jeeps and ATVs but is also a good place to bring a dual sport motorcycle. Most of the trails are rated as moderately challenging but there are a couple of expert level only trails which include Black Bear Pass and Poughkeepsie Gulch. The trails are only passable during the summer months and are usually snow free by mid June. Other area highlights include natural hot springs in Ouray that are sulphur free. Permit Required Yes Colorado OHV Sticker Dates Open June - October Other ATV Stickers Accepted No Colorado Non-Resident OHV permit required. Spark Arrestor Yes A spark arresting exhaust silencer or end cap is required for all vehicles. Noise Limit Yes (96 dB) (1998/older limit 99 dB, 1998/newer limit 96 dB) Whip Flags Not Required Maximum Vehicle Width No Restriction Allow Dirt Bikes, Trail Bikes and Motorcycles Motorcycles & Dirt Bikes Permitted Allow All Terrain Vehicles / Quads / Four Wheelers ATVs Permitted Allow Utility Terrain Vehicles, Side by Sides (SXS), RZR UTV & SXS Permitted Allow 4x4 Jeeps, SUVs and 4 x 4 Trucks with License Plates 4x4 & Jeeps (registered) Permitted Dune Buggy & Sand Rail 4x4 (unregistered) Permitted 2 Stroke Engines No Restriction Camping / Overnight RV Parking Camping Some Areas (camp in developed sites only) Campfire Restrictions Campfires Some Areas (permitted in developed campsites only) Night Riding Unknown Not Recommended Trail Blazing Prohibited keep on the trail