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 Evans Byway | Clear Creek | 4.310m (14,130ft) | Asphalt |
| Pikes Peak | El Paso | 4.302m (14,115ft) | Asphalt |
| Mount Lincoln | Park | 4.297m (14,097ft) | Gravel |
| Mount Antero | Chaffee | 4.189m (13,743ft) | Gravel |
| Kuss Peak | Lake | 4.136m (13,569ft) | Gravel |
| Mosquito Peak | Lake | 4.127m (13,540ft) | Gravel |
| Peak 10 | Summit | 4.085m (13,402ft) | Gravel |
| Mount Bross | Park | 4.071m (13,356ft) | Gravel |
| Coney Summit | Hinsdale | 4.059m (13,316ft) | Gravel |
| Boulder Mountain | Chaffee | 4.035m (13,238ft) | Gravel |
| Argentine Pass | Clear-Summit | 4.034m (13,238ft) | Gravel |
| Hurricane peak | San Juan | 4.034m (13,238ft) | Gravel |
| Sunnyside Saddle | San Juan | 4.030m (13,221ft) | Gravel |
| Bennett Peak | Rio Grande | 4.029m (13,218ft) | Gravel |
| Mosquito Pass | Lake | 4.026m (13,209ft) | Gravel |
| Peerless Mountain | Park/Lake | 4.022m (13,195ft) | Gravel |
| Mount Sheridan | Park | 4.021m (13,192ft) | Gravel |
| Bartlett Mountain | Chaffee | 4.013m (13,167ft) | Gravel |
| Sant Fe Peak | Summit | 4.008m (13,149ft) | Gravel |
| Quail Mountain | Chaffee | 4.006m (13,143ft) | Gravel |
| Imogene Pass | Ouray | 3.997m (13,114ft) | Gravel |
| Darley Mountain | Ouray | 3.997m (13,113ft) | Gravel |
| McClellan Mtn | Clear Creek | 3.996m (13,110ft) | Gravel |
| Hermit Pass | Custer | 3.986m (13,077ft) | Gravel |
| Buffalo Boy Mine | San Juan | 3.984m (13,070ft) | Gravel |
| Kendall Mtn | San Juan | 3.981m (13,061ft) | Gravel |
| North Star Mtn | Summit | 3.960m (12,992ft) | Gravel |
| Bent Peak | Hinsdale | 3.953m (12,969ft) | Gravel |
| Bald Mountain | Summit | 3.952m (12,965ft) | Gravel |
| Mount Sherman | Park | 3.950m (12,959ft) | Gravel |
| Whale Peak | Summit | 3.940m (12,926ft) | Gravel |
| Brown Mountain | San Juan | 3.939m (12,923ft) | Gravel |
| Poughkeepsie Pass | San Juan | 3.938m (12,919ft) | Gravel |
| Red Mountain No. 3 | San Juan | 3.932m (12,900ft) | Gravel |
| Mount Champion | Lake | 3.930m (12,893ft) | Gravel |
| La Junta Peak | San Miguel | 3.926m (12,880ft) | Gravel |
| Casco Peak | Lake | 3.925m (12,877ft) | Gravel |
| USFS 503 Road | Mineral | 3.925m (12,877ft) | Gravel |
| Glacier Peak | Summit-Jefferson | 3.917m (12,851ft) | Gravel |
| Halfmoon Creek | Lake | 3.915m (12,846ft) | Gravel |
| Black Bear Pass | San Miguel | 3.915m (12,844ft) | Gravel |
| Red Cone Pass | Park | 3.905m (12,811ft) | Gravel |
| Engineer Pass | Ouray | 3.901m (12,800ft) | Gravel |
| Taylor Mountain | Chaffee | 3.899m (12,791ft) | Gravel |
| Malemute Peak | Pitkin | 3.899m (12,791ft) | Gravel |
| Kendall Mountain | San Juan | 3.895m (12,778ft) | Gravel |
| Yvonne Pass | Hinsdale-San Juan | 3.893m (12,772ft) | Gravel |
| Cave Lake | Chaffee | 3.891m (12,765ft) | Gravel |
| Hanson Peak | San Juan | 3.890m (12,762ft) | Gravel |
| Mount Buckskin | Park | 3.881m (12,732ft) | Gravel |
| Mount Sherman | Lake | 3.878m (12,723ft) | Gravel |
| American Flag Mtn | Gunnison | 3.878m (12,723ft) | Gravel |
| Pearl Pass | Pitkin-Gunnison | 3.878m (12,723ft) | Gravel |
| Red Mountain | Chaffee | 3.869m (12,693ft) | Gravel |
| Jones Mountain | Chaffee | 3.866m (12,683ft) | Gravel |
| Trinchera Peak | Costilla | 3.860m (12,664ft) | Gravel |
| Hurricane Basin | Hinsdale | 3.858m (12,657ft) | Gravel |
| Wise Mountain | Summit | 3.854m (12,644ft) | Gravel |
| Cinnamon Pass | San Juan | 3.853m (12,640ft) | Gravel |
| Grayback Mountain | Rio Grande | 3.853m (12,640ft) | Gravel |
| Trico Peak | San Miguel | 3.849m (12,627ft) | Gravel |
| Stony Pass | San Juan | 3.846m (12,618ft) | Gravel |
| Radical Hill | Summit | 3.846m (12,618ft) | Gravel |
| Mesa Seco | Hinsdale | 3.846m (12,618ft) | Gravel |
| Mount Edwards | Summit | 3.844m (12,611ft) | Gravel |
| Mount Mamma | Chaffee | 3.842m (12,604ft) | Gravel |
| Cronin Peak | Chaffee | 3.842m (12,604ft) | Gravel |
| Revelation Lift | San Miguel | 3.837m (12,588ft) | Gravel |
| Bullion King Lake | San Juan | 3.832m (12,572ft) | Gravel |
| Saint Sophia Ridge | Ouray | 3.829m (12,562ft) | Gravel |
| Prospect Mountain | Lake | 3.829m (12,562ft) | Gravel |
| Antora Peak | Saguache | 3.823m (12,542ft) | Gravel |
| Lenawee Lift | Summit | 3.818m (12,526ft) | Gravel |
| Yankee Boy Basin | Ouray | 3.818m (12,526ft) | Gravel |
| Colorado Mines Peak | Clear Creek | 3.812m (12,506ft) | Gravel |
| Jones Pass | Clear-Grand | 3.804m (12,480ft) | Gravel |
| Saint Sophia Ridge (2) | Ouray | 3.799m (12,463ft) | Gravel |
| Glacier Mountain | Summit | 3.793m (12,444ft) | Gravel |
| Meridian Peak | Eagle | 3.789m (12,432ft) | Gravel |
| Beaver Creek Road | Park | 3.787m (12,424ft) | Gravel |
| Fairview Peak | Gunnison | 3.781m (12,404ft) | Gravel |
| Houghton Mountain | San Juan | 3.781m (12,404ft) | Gravel |
| Atlantic Peak | Summit | 3.778m (12,395ft) | Gravel |
| Mount Tilton | Gunnison | 3.777m (12,391ft) | Gravel |
| Hurricane Basin | Hinsdale | 3.776m (12,388ft) | Gravel |
| Almagre Mountain | Teller | 3.774m (12,381ft) | Gravel |
| Carson ghost town | Hinsdale | 3.772m (12,375ft) | Gravel |
| Garfield Peak | Chaffee | 3.771m (12,372ft) | Gravel |
| Almagre Mtn South | Teller | 3.771m (12,372ft) | Gravel |
| Mount Wilcox | Summit | 3.770m (12,368ft) | Gravel |
| Peru Creek Trail | Summit | 3.760m (12,335ft) | Gravel |
| North Twin Cone Peak | Park | 3.759m (12,332ft) | Gravel |
| Bonita Peak | San Juan | 3.759m (12,332ft) | Gravel |
| Copper Mountain | Summit | 3.758m (12,329ft) | Gravel |
| Buckeye Peak | Lake | 3.757m (12,326ft) | Gravel |
| Silver Plume Mountain | Clear Creek | 3.756m (12,322ft) | Gravel |
| Lake Como | San Juan | 3.755m (12,319ft) | Gravel |
| Union Mountain | Summit | 3.755m (12,319ft) | Gravel |
| Maggie Gulch mine | San Juan | 3.755m (12,319ft) | Gravel |
| Red Mountain | Clear Creek | 3.754m (12,316ft) | Gravel |
| Gold Hill | Gunnison | 3.752m (12,309ft) | Gravel |
| Upper Pomeroy Lake | Chaffee | 3.744m (12,283ft) | Gravel |
| Lake Emma | San Juan | 3.741m (12,273ft) | Gravel |
| Niwot Ridge Top | Boulder | 3.741m (12,273ft) | Gravel |
| Richmond Hill Road | Pitkin | 3.738m (12,265ft) | Gravel |
| Ruby Peak | Gunnison | 3.738m (12,265ft) | Gravel |
| Corkscrew Pass | San Juan | 3.732m (12,244ft) | Gravel |
| Blue Lake | San Miguel | 3.728m (12,230ft) | Gravel |
| Little Giant Peak | San Juan | 3.727m (12,227ft) | Gravel |
| Big Horn Reservoir | El Paso | 3.727m (12,227ft) | Gravel |
| Golden Bear Peak | Clear Creek | 3.725m (12,221ft) | Gravel |
| Revenue Mountain | Clear Creek | 3.725m (12,221ft) | Gravel |
| Prospect Mountain | Conejos | 3.724m (12,217ft) | Gravel |
| Trail Ridge High Point | Larimer | 3.721m (12,209ft) | Asphalt |
| Wilson Peak | San Miguel | 3.719m (12,201ft) | Gravel |
| Lake Wheeler | Park | 3.717m (12,194ft) | Gravel |
| Peak 8 | Summi | 3.712m (12,178ft) | Gravel |
| Difficult Pass | Gunnison | 3.712m (12,178ft) | Gravel |
| Blue Lakes | Alamosa | 3.711m (12,175ft) | Gravel |
| Tincup Pass | Gunnison | 3.710m (12,171ft) | Gravel |
| Big Bear Peak | San Miguel | 3.709m (12,168ft) | Gravel |
| Hancock Pass | Gunnison | 3.702m (12,145ft) | Gravel |
| Kite lake | San Juan | 3.700m (12,139ft) | Gravel |
| Forest Road 825 | San Juan | 3.700m (12,139ft) | Gravel |
| Mount Princeton | Chaffee | 3.699m (12,137ft) | Gravel |
| Cottonwood Pass | Chaffee | 3.696m (12,126ft) | Asphalt |
| London Mountain | Park | 3.695m (12,122ft) | Gravel |
| Hoosier Pass | Summit | 3.692m (12,112ft) | Gravel |
| Webster Pass | Summit | 3.689m (12,103ft) | Gravel |
| Independence Pass | Pitkin | 3.692m (12,112ft) | Asphalt |
| Emma Burr Mtn. | Chaffee | 3.692m (12,112ft) | Gravel |
| Gunsight Pass | Gunnison | 3.692m (12,112ft) | Gravel |
| Missouri Hill | Chaffee | 3.684m (12,086ft) | Gravel |
| Ptarmigan Hill | Eagle | 3.681m (12,076ft) | Gravel |
| Teddys Peak | Costilla-Huerfano | 3.678m (12,066ft) | Gravel |
| Keystone Mountain | Summit | 3.677m (12,063ft) | Gravel |
| Lake Pomeroy | Chaffee | 3.672m (12,047ft) | Gravel |
| Hagerman Pass | Pitkin | 3.672m (12,050ft) | Gravel |
| Kingston Peak | Clear Creek | 3.671m (12,043ft) | Gravel |
| Kite Lake | Park | 3.671m (12,043ft) | Gravel |
| Cumberland Pass | Gunnison | 3.670m (12,040ft) | Gravel |
| Chrysolite Mountain | Chaffee | 3.669m (12,037ft) | Gravel |
| Napoleon Pass | Gunnison | 3.668m (12,034ft) | Gravel |
| Chalk Mountain | Lake | 3.667m (12,030ft) | Gravel |
| Billings Lake | Chaffee | 3.663m (12,017ft) | Gravel |
| Terrible Mountain | Gunnison | 3.662m (12,015ft) | Gravel |
| Denver Pass | San Juan | 3.660m (12,007ft) | Gravel |
| Loveland Pass | Summit | 3.660m (12,007ft) | Asphalt |
| Tomichi pass | Chaffee | 3.657m (11,998ft) | Gravel |
| Clear Lake | San Juan | 3.653m (11,984ft) | Gravel |
| Heart Lake | Hinsdale | 3.653m (11,984ft) | Gravel |
| Imperial Express | Summit | 3.652m (11,981ft) | Gravel |
| Middle Mountain | Chaffee | 3.652m (11,981ft) | Gravel |
| Ball Mountain | Lake | 3.648m (11,968ft) | Gravel |
| County Highway 730 | Grand | 3.647m (11,965ft) | Gravel |
| Indiana Pass | Rio Grande | 3.645m (11,958ft) | Gravel |
| Weston Pass | Park-Lake | 3.639m (11,938ft) | Gravel |
| Resolution Mountain | Eagle | 3.638m (11,935ft) | Gravel |
| Taylor Pass | Gunnison | 3.636m (11,930ft) | Gravel |
| Monarch Ridge South | Chaffee | 3.634m (11,922ft) | Gravel |
| Rogers Pass | Gilpin-Grand | 3.633m (11,919ft) | Gravel |
| Lake Cleveland | Lake | 3.618m (11,870ft) | Gravel |
| Lake Isabelle | Lake | 3.619m (11,873ft) | Gravel |
| Boehmer Reservoir | El Paso | 3.610m (11,843ft) | Gravel |
| Ruby Mountain | Summit | 3.607m (11,833ft) | Gravel |
| Iceberg Pass | Larimer | 3.605m (11,827ft) | Asphalt |
| Taylor Peak | Pitkin-Gunnison | 3.602m (11,817ft) | Asphalt-Gravel |
