110 public E85 stations in Colorado, led by Colorado Springs, Denver, Aurora. Search the map by address or ZIP.
Excellent E85 coverage! Stations are widely available throughout the state.
Colorado offers 110 E85 stations—an impressive network for a Western state far from the corn belt. The Front Range urban corridor provides excellent coverage, while mountain areas offer limited but strategic options.
High altitude creates unique advantages for E85 in Colorado. The state sells 85-octane gasoline as "regular" due to reduced air density. E85's 100-105 octane rating provides significant performance benefits for both stock and modified vehicles.
Colorado offers an Alternative Fuel Vehicle Tax Credit, a Corn Blender Pump Program funding stations dispensing mid-level ethanol blends, and a 2,000-pound weight exemption for E85-capable vehicles.
Colorado Springs leads with approximately 26 stations. Denver proper hosts 6+ stations with substantial coverage throughout surrounding suburbs. Major retailers include Kum & Go, Alta Convenience Stores, and Cenex-Agland.
Mountain access requires planning. Frisco in Summit County has one station. Idaho Springs provides critical I-70 mountain corridor coverage. However, Vail and Aspen lack dedicated E85 stations.
Like Arizona, many Colorado stations sell E65-E70 rather than true E85. Kum & Go commonly tests at E70. For verified E85, check enthusiast forums or carry an ethanol tester.
Front Range driving is excellent for E85. Mountain trips require planning—fill up at Idaho Springs heading west or Frisco before continuing to Vail. Winter blends provide better cold starts but lower ethanol content. The high-octane advantage makes E85 particularly attractive for turbocharged vehicles at altitude.
How E85 makes power and what it takes to tune for it: octane, charge cooling, fuel system sizing, flex-fuel sensors, realistic gains, cost per mile, and when it isn't worth it.
Understand the scientific differences between E85 and regular gasoline including energy content, octane ratings, combustion characteristics, and why these differences matter.
Compare the real-world costs of E85 versus regular gasoline for your vehicle. Learn how to calculate cost per mile and determine if E85 saves you money.
Like Arizona, many Colorado stations sell E65-E70 rather than true E85. Kum & Go commonly tests at E70. For verified E85, check enthusiast forums or carry an ethanol tester. Across Colorado's 110 public E85 stations, actual savings vary by retailer and regional transport costs. Remember to adjust for E85's roughly 25–27% lower fuel economy when calculating cost per mile.
Colorado has 110 public E85 stations as of September 2026, according to the U.S. Department of Energy's Alternative Fuels Data Center. The most are in Colorado Springs (32), Denver (7) and Aurora (5). Those 3 cities hold only about 40% of the total — the rest are spread across smaller towns and highway stops.
Colorado Springs leads with approximately 26 stations. Denver proper hosts 6+ stations with substantial coverage throughout surrounding suburbs. Major retailers include Kum & Go, Alta Convenience Stores, and Cenex-Agland. For live station data, scroll up to the interactive map or plan a route through Colorado.
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