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 | 4.321m (14,178ft) | Gravel |
| Mount Evans Byway | Clear Creek | 4.310m (14,130ft) | Asphalt |
| Pikes Peak | El Paso | 4.302m (14,115ft) | Asphalt |
| Mount Lincoln | Park | 4.222m (13,854ft) | 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 | 4.082m (13,392ft) | Gravel |
| Boulder Mountain | Chaffee | 4.035m (13,238ft) | Gravel |
| Hurricane pass | San Juan | 4.034m (13,238ft) | Gravel |
| Sunnyside Saddle | San Juan | 4.030m (13,221ft) | Gravel |
| Bennett Peak | Rio Grande | 4.026m (13,209ft) | Gravel |
| Mosquito Pass | Lake | 4.026m (13,209ft) | Gravel |
| Argentine Pass | Summit | 4.025m (13,207ft) | Gravel |
| Mount Sheridan | Park | 4.021m (13,192ft) | Gravel |
| Bartlett Mountain | Chaffee | 4.013m (13,167ft) | Gravel |
| Quail Mountain | Chaffee | 4.013m (13,167ft) | Gravel |
| Sant Fe Peak | Summit | 4.008m (13,149ft) | Gravel |
| Imogene Pass | Ouray | 3.997m (13,114ft) | Gravel |
| Darley Mountain | Ouray | 3.997m (13,113ft) | Gravel (closed) |
| McClellan Mtn | Clear Creek | 3.996m (13,110ft) | Gravel |
| Buffalo Boy Mine | San Juan | 3.984m (13,070ft) | Gravel |
| Kendall Mtn | San Juan | 3.981m (13,061ft) | Gravel |
| Hermit Pass | Custer | 3.962m (13,047ft) | Gravel |
| North Star Mtn | Summit | 3.960m (12,992ft) | Gravel |
| County Road 36 | Hinsdale | 3.952m (12,965ft) | Gravel |
| Bald Mountain | Summit | 3.952m (12,965ft) | Gravel |
| Hilltop Mine | 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 |
| Halfmoon Creek | Lake | 3.915m (12,846ft) | Gravel |
| Black Bear Pass | San Miguel | 3.910m (12,840ft) | 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 |
| Cave Lake | Chaffee | 3.891m (12,765ft) | Gravel |
| Hanson Peak | San Juan | 3.890m (12,762ft) | Gravel |
| Yvonne Pass | San Juan | 3.886m (12,750ft) | 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 | 3.872m (12,705ft) | 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 |
| 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 |
| 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 |
| Stony Pass | San Juan | 3.838m (12,592ft) | 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 |
| Whiskey Pass | Costilla | 3.825m (12,549ft) | 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 |
| Mount Tilton | Gunnison | 3.798m (12,460ft) | Gravel |
| Jones Pass | Clear Creek | 3.796m (12,454ft) | Gravel |
| Glacier Mountain | Summit | 3.793m (12,444ft) | Gravel |
| Meridian Peak | Eagle | 3.789m (12,432ft) | 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 |
| Hurricane Basin | Hinsdale | 3.776m (12,388ft) | Gravel |
| Carson Pass | Hinsdale | 3.772m (12,375ft) | Gravel |
| Garfield Peak | Chaffee | 3.771m (12,372ft) | Gravel |
| Mount Wilcox | Summit | 3.770m (12,368ft) | Gravel |
| American Basin | Hinsdale | 3.769m (12,365ft) | 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 |
| Mount Zion | 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 |
| 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 |
| Hancock Pass | Gunnison | 3.721m (12,208ft) | Gravel |
| Wilson Peak | San Miguel | 3.719m (12,201ft) | Gravel |
| Trail Ridge | Larimer | 3.719m (12,201ft) | Asphalt |
| Lake Wheeler | Park | 3.717m (12,194ft) | Gravel |
| Trail Ridge High Point | Larimer | 3.713m (12,183ft) | Asphalt |
| Peak 8 | Summi | 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 |
| 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 |
| Difficult Pass | Gunnison | 3.677m (12,063ft) | Gravel |
| Keystone Mountain | Summit | 3.677m (12,063ft) | Gravel |
| Lake Pomeroy | Chaffee | 3.672m (12,047ft) | Gravel |
| Kingston Peak | Clear Creek | 3.671m (12,043ft) | Gravel |
| Kite Lake | Park | 3.671m (12,043ft) | Gravel |
| Chrysolite Mountain | Chaffee | 3.669m (12,037ft) | Gravel |
| Napoleon Pass | Gunnison | 3.668m (12,034ft) | Gravel |
| Cumberland Pass | Gunnison | 3.662m (12,015ft) | Gravel |
| Terrible Mountain | Gunnison | 3.662m (12,015ft) | Gravel |
| Golden Bear Peak | Clear Creek | 3.725m (12,221ft) | Gravel |
| Loveland Pass | Summit | 3.655m (11,992ft) | Asphalt |
| Clear Lake | San Juan | 3.653m (11,984ft) | Gravel |
| Tomichi pass | Chaffee | 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 |
| County Highway 730 | Grand | 3.647m (11,965ft) | Gravel |
| Resolution Mountain | Eagle | 3.638m (11,935ft) | Gravel |
| Denver Pass | San Juan | 3.636m (11,930ft) | Gravel |
| Taylor Pass | Gunnison | 3.636m (11,930ft) | Gravel |
| Hagerman Pass | Pitkin | 3.635m (11,925ft) | Gravel |
| Monarch Ridge South | Chaffee | 3.634m (11,922ft) | Gravel |
| Weston Pass | Park | 3.633m (11,921ft) | Gravel |
| Lake Cleveland | Lake | 3.618m (11,870ft) | Gravel |
| Lake Isabelle | Lake | 3.619m (11,873ft) | Gravel |
| Ruby Mountain | Summit | 3.619m (11,873ft) | Gravel |
| Iceberg Pass | Larimer | 3.605m (11,827ft) | Asphalt |
