Speedway Gas Prices in Rapid City, SD

Speedway premium is worth the cost only if your vehicle requires premium-grade fuel. Speedway's premium meets the same 91-93 octane standard as competing brands. The decision should be driven by your vehicle's requirements.

Speedy Rewards is one of the largest loyalty programs in the convenience store industry with over 50 million members. Earn points on fuel, food, and merchandise redeemable for free items, fuel discounts, and more. Co-branded credit cards from major fuel brands typically offer 3-5% back on gas purchases at that brand's stations.

TOP TIER certification means a fuel brand's additives exceed EPA minimum detergency standards. This designation is recognized by major automakers including GM, Ford, BMW, and Toyota as beneficial for long-term engine health.

Speedway, now part of the 7-Eleven family, operates high-volume fuel stations primarily in the Midwest, Southeast, and East Coast markets. Speedway's scale and purchasing power allow it to consistently price below local market averages. The chain is known for its large-format convenience stores with extensive food and beverage options alongside competitive fuel pricing. The key differentiator for Speedway fuel is its proprietary additive package, specifically formulated to clean fuel injectors, intake valves, and combustion chambers.