Located in the western United States, Colorado is notable for its diverse geography, from vast prairie grasslands to the majestic mountains, rushing rivers to desert landscapes. It’s classified as one of the mountain states, located in the Rocky upland part of the USA. Colorado is unlike anywhere else, ranging from alpine mountains, arid plains and deserts with huge sand dunes, deep canyons, sandstone and granite rock formations, rivers, lakes and lush forests.
List of the highest mountain roads in Colorado:
| Pass | County | Elevation | Surface |
| Mount Bross | Park County | 4.321m (14,178ft) | Gravel |
| Mount Evans Byway | Clear Creek County | 4.310m (14,130ft) | Asphalt |
| Pikes Peak | El Paso County | 4.302m (14,115ft) | Asphalt |
| Mount Lincoln | Park County | 4.222m (13,854ft) | Gravel |
| Mount Antero | Chaffee County | 4.189m (13,743ft) | Gravel |
| Kuss Peak | Lake County | 4.136m (13,569ft) | Gravel |
| Mosquito Peak | Lake County | 4.127m (13,540ft) | Gravel |
| Peak 10 | Summit County | 4.082m (13,392ft) | Gravel |
| Boulder Mountain | Chaffee County | 4.035m (13,238ft) | Gravel |
| Hurricane pass | San Juan County | 4.034m (13,238ft) | Gravel |
| Sunnyside Saddle | San Juan County | 4.030m (13,221ft) | Gravel |
| Bennett Peak | Rio Grande County | 4.026m (13,209ft) | Gravel |
| Mosquito Pass | Lake County | 4.026m (13,209ft) | Gravel |
| Argentine Pass | Summit County | 4.025m (13,207ft) | Gravel |
| Mount Sheridan | Park County | 4.021m (13,192ft) | Gravel |
| Bartlett Mountain | Chaffee County | 4.013m (13,167ft) | Gravel |
| Quail Mountain | Chaffee County | 4.013m (13,167ft) | Gravel |
| Sant Fe Peak | Summit County | 4.008m (13,149ft) | Gravel |
| Imogene Pass | Ouray County | 3.997m (13,114ft) | Gravel |
| Darley Mountain | Ouray County | 3.997m (13,113ft) | Gravel (closed) |
| McClellan Mountain | Clear Creek County | 3.996m (13,110ft) | Gravel |
| Kendall Mountain | San Juan County | 3.981m (13,061ft) | Gravel |
| Hermit Pass | Custer County | 3.962m (13,047ft) | Gravel |
| North Star Mountain | Summit County | 3.960m (12,992ft) | Gravel |
| County Road 36 | Hinsdale Count | 3.952m (12,965ft) | Gravel |
| Bald Mountain | Summit County | 3.952m (12,965ft) | Gravel |
| Hilltop Mine | Park County | 3.950m (12,959ft) | Gravel |
| Whale Peak | Summit County | 3.940m (12,926ft) | Gravel |
| Brown Mountain | San Juan County | 3.939m (12,923ft) | Gravel |
| Poughkeepsie Pass | San Juan County | 3.938m (12,919ft) | Gravel |
| Red Mountain No. 3 | San Juan County | 3.932m (12,900ft) | Gravel |
| Mount Champion | Lake County | 3.930m (12,893ft) | Gravel |
| La Junta Peak | San Miguel County | 3.926m (12,880ft) | Gravel |
| Casco Peak | Lake County | 3.925m (12,877ft) | Gravel |
| Halfmoon Creek | Lake County | 3.915m (12,846ft) | Gravel |
| Black Bear Pass | San Miguel County | 3.910m (12,840ft) | Gravel |
| Engineer Pass | Ouray County | 3.901m (12,800ft) | Gravel |
| Taylor Mountain | Chaffee County | 3.899m (12,791ft) | Gravel |
| Malemute Peak | Pitkin County | 3.899m (12,791ft) | Gravel |
| Kendall Mountain | San Juan County | 3.895m (12,778ft) | Gravel |
| Cave Lake | Chaffee County | 3.891m (12,765ft) | Gravel |
| Hanson Peak | San Juan County | 3.890m (12,762ft) | Gravel |
| Yvonne Pass | San Juan County | 3.886m (12,750ft) | Gravel |
| Mount Buckskin | Park County | 3.881m (12,732ft) | Gravel |
| Mount Sherman | Lake County | 3.878m (12,723ft) | Gravel |
| American Flag Mtn | Gunnison County | 3.878m (12,723ft) | Gravel |
| Pearl Pass | Pitkin County | 3.872m (12,705ft) | Gravel |
| Red Mountain | Chaffee County | 3.869m (12,693ft) | Gravel |
| Jones Mountain | Chaffee County | 3.866m (12,683ft) | Gravel |
| Trinchera Peak | Costilla County | 3.860m (12,664ft) | Gravel |
| Wise Mountain | Summit County | 3.854m (12,644ft) | Gravel |
| Cinnamon Pass | San Juan County | 3.853m (12,640ft) | Gravel |
| Grayback Mountain | Rio Grande County | 3.853m (12,640ft) | Gravel |
| Trico Peak | San Miguel County | 3.849m (12,627ft) | Gravel |
| Radical Hill | Summit County | 3.846m (12,618ft) | Gravel |
| Mount Edwards | Summit County | 3.844m (12,611ft) | Gravel |
| Mount Mamma | Chaffee County | 3.842m (12,604ft) | Gravel |
| Cronin Peak | Chaffee County | 3.842m (12,604ft) | Gravel |
| Stony Pass | San Juan County | 3.838m (12,592ft) | Gravel |
| Revelation Lift | San Miguel County | 3.837m (12,588ft) | Gravel |
| Bullion King Lake | San Juan County | 3.832m (12,572ft) | Gravel |
| Saint Sophia Ridge | Ouray County | 3.829m (12,562ft) | Gravel |
| Prospect Mountain | Lake County | 3.829m (12,562ft) | Gravel |
| Whiskey Pass | Costilla County | 3.825m (12,549ft) | Gravel |
| Antora Peak | Saguache County | 3.823m (12,542ft) | Gravel |
| Lenawee Lift | Summit County | 3.818m (12,526ft) | Gravel |
| Yankee Boy Basin | Ouray County | 3.818m (12,526ft) | Gravel |
| Colorado Mines Peak | Clear Creek County | 3.812m (12,506ft) | Gravel |
| Mount Tilton | Gunnison County | 3.798m (12,460ft) | Gravel |
| Jones Pass | Clear Creek County | 3.796m (12,454ft) | Gravel |
| Glacier Mountain | Summit County | 3.793m (12,444ft) | Gravel |
| Meridian Peak | Eagle County | 3.789m (12,432ft) | Gravel |
| Fairview Peak | Gunnison County | 3.781m (12,404ft) | Gravel |
| Houghton Mountain | San Juan County | 3.781m (12,404ft) | Gravel |
| Atlantic Peak | Summit County | 3.778m (12,395ft) | Gravel |
| Hurricane Basin | Hinsdale County | 3.776m (12,388ft) | Gravel |
| Carson Pass | Hinsdale County | 3.772m (12,375ft) | Gravel |
| Garfield Peak | Chaffee County | 3.771m (12,372ft) | Gravel |
| Mount Wilcox | Summit County | 3.770m (12,368ft) | Gravel |
| American Basin | Hinsdale County | 3.769m (12,365ft) | Gravel |
| North Twin Cone Peak | Park County | 3.759m (12,332ft) | Gravel |
| Bonita Peak | San Juan County | 3.759m (12,332ft) | Gravel |
| Copper Mountain | Summit County | 3.758m (12,329ft) | Gravel |
| Mount Zion | Lake County | 3.757m (12,326ft) | Gravel |
| Silver Plume Mountain | Clear Creek County | 3.756m (12,322ft) | Gravel |
| Lake Como | San Juan County | 3.755m (12,319ft) | Gravel |
| Union Mountain | Summit County | 3.755m (12,319ft) | Gravel |
| Red Mountain | Clear Creek County | 3.754m (12,316ft) | Gravel |
| Gold Hill | Gunnison County | 3.752m (12,309ft) | Gravel |
| Upper Pomeroy Lake | Chaffee County | 3.744m (12,283ft) | Gravel |
| Lake Emma | San Juan County | 3.741m (12,273ft) | Gravel |
| Niwot Ridge Top | Boulder County | 3.741m (12,273ft) | Gravel |
| Richmond Hill Road | Pitkin County | 3.738m (12,265ft) | Gravel |
| Ruby Peak | Gunnison County | 3.738m (12,265ft) | Gravel |
| Corkscrew Pass | San Juan County | 3.732m (12,244ft) | Gravel |
| Blue Lake | San Miguel County | 3.728m (12,230ft) | Gravel |
| Little Giant Peak | San Juan County | 3.727m (12,227ft) | Gravel |
| Big Horn Reservoir | El Paso County | 3.727m (12,227ft) | Gravel |
| Golden Bear Peak | Clear Creek County | 3.725m (12,221ft) | Gravel |
| Revenue Mountain | Clear Creek County | 3.725m (12,221ft) | Gravel |
| Hancock Pass | Gunnison County | 3.721m (12,208ft) | Gravel |
| Wilson Peak | San Miguel County | 3.719m (12,201ft) | Gravel |
| Trail Ridge | Larimer County | 3.719m (12,201ft) | Asphalt |
| Lake Wheeler | Park County | 3.717m (12,194ft) | Gravel |
| Trail Ridge High Point | Larimer County | 3.713m (12,183ft) | Asphalt |
| Peak 8 | Summit County | 3.712m (12,178ft) | Gravel |
| Blue Lakes | Alamosa County | 3.711m (12,175ft) | Gravel |
| Tincup Pass | Gunnison County | 3.710m (12,171ft) | Gravel |
| Big Bear Peak | San Miguel County | 3.709m (12,168ft) | Gravel |
| Kite lake | San Juan County | 3.700m (12,139ft) | Gravel |
| Forest Road 825 | San Juan County | 3.700m (12,139ft) | Gravel |
| Mount Princeton | Chaffee County | 3.699m (12,137ft) | Gravel |
| Cottonwood Pass | Chaffee County | 3.696m (12,126ft) | Asphalt |
| London Mountain | Park County | 3.695m (12,122ft) | Gravel |
| Webster Pass | Summit County | 3.689m (12,103ft) | Gravel |
| Independence Pass | Pitkin County | 3.692m (12,112ft) | Asphalt |
| Emma Burr Mtn. | Chaffee County | 3.692m (12,112ft) | Gravel |
| Gunsight Pass | Gunnison County | 3.692m (12,112ft) | Gravel |
| Missouri Hill | Chaffee County | 3.684m (12,086ft) | Gravel |
| Ptarmigan Hill | Eagle County | 3.681m (12,076ft) | Gravel |
| Difficult Pass | Gunnison County | 3.677m (12,063ft) | Gravel |
| Keystone Mountain | Summit County | 3.677m (12,063ft) | Gravel |
| Lake Pomeroy | Chaffee County | 3.672m (12,047ft) | Gravel |
| Kingston Peak | Clear Creek County | 3.671m (12,043ft) | Gravel |
| Kite Lake | Park County | 3.671m (12,043ft) | Gravel |
| Chrysolite Mountain | Chaffee County | 3.669m (12,037ft) | Gravel |
| Napoleon Pass | Gunnison County | 3.668m (12,034ft) | Gravel |
| Cumberland Pass | Gunnison County | 3.662m (12,015ft) | Gravel |
| Terrible Mountain | Gunnison County | 3.662m (12,015ft) | Gravel |
| Golden Bear Peak | Clear Creek County | 3.725m (12,221ft) | Gravel |
| Loveland Pass | Summit County | 3.655m (11,992ft) | Asphalt |
| Clear Lake | San Juan County | 3.653m (11,984ft) | Gravel |
| Tomichi pass | Chaffee County | 3.653m (11,984ft) | Gravel |
| Heart Lake | Hinsdale County | 3.653m (11,984ft) | Gravel |
| Imperial Express | Summit County | 3.652m (11,981ft) | Gravel |
| Middle Mountain | Chaffee County | 3.652m (11,981ft) | Gravel |
| County Highway 730 | Grand County | 3.647m (11,965ft) | Gravel |
| Resolution Mountain | Eagle County | 3.638m (11,935ft) | Gravel |
| Denver Pass | San Juan County | 3.636m (11,930ft) | Gravel |
| Taylor Pass | Gunnison County | 3.636m (11,930ft) | Gravel |
| Hagerman Pass | Pitkin County | 3.635m (11,925ft) | Gravel |
| Monarch Ridge South | Chaffee County | 3.634m (11,922ft) | Gravel |
| Weston Pass | Park County | 3.633m (11,921ft) | Gravel |
| Lake Cleveland | Lake County | 3.618m (11,870ft) | Gravel |
| Lake Isabelle | Lake County | 3.619m (11,873ft) | Gravel |
| Ruby Mountain | Summit County | 3.619m (11,873ft) | Gravel |
| Iceberg Pass | Larimer County | 3.605m (11,827ft) | Asphalt |
