Marathon Gas Prices in Denver, CO
Updated April 5, 2026 — Prices updated regularly from EIA data
Marathon Regular Unleaded — Est. price in Denver
About Marathon Fuel
Marathon Petroleum is one of America's largest petroleum refiners, operating Marathon branded stations primarily across the Midwest, Southeast, and East Coast. Marathon's direct refining-to-retail model means their stations benefit from efficient supply chains. Marathon fuel meets all TOP TIER detergent gasoline standards and is particularly well-distributed in Ohio, Michigan, Indiana, and Kentucky.
Marathon Loyalty Program
Marathon MakeItCount rewards program earns points on fuel and in-store purchases. Members can redeem points for cents-per-gallon fuel discounts and store merchandise.
Brand Price Comparison in Denver
| Brand | Est. Price | vs. Marathon |
|---|---|---|
| Costco | $3.03 | $-0.17 |
| Speedway | $3.15 | $-0.05 |
| Circle K | $3.16 | $-0.04 |
| Sunoco | $3.19 | $-0.01 |
| Marathon THIS PAGE | $3.20 | — |
| BP | $3.22 | +$0.02 |
| Mobil | $3.23 | +$0.03 |
| Exxon | $3.24 | +$0.04 |
| Shell | $3.26 | +$0.06 |
| Chevron | $3.28 | +$0.08 |
Marathon Prices in Nearby Cities
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