Cheapest Speedway Gas Prices in South Dakota
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SD Avg. Gas Prices
| Regular | Mid-Grade | Premium | Diesel | |
|---|---|---|---|---|
| Current Avg. | $4.153 | $4.304 | $4.798 | $5.190 |
| Yesterday Avg. | $4.065 | $4.249 | $4.736 | $5.188 |
| Week Ago Avg. | $3.779 | $3.929 | $4.465 | $4.824 |
| Month Ago Avg. | $3.555 | $3.735 | $4.247 | $4.732 |
| Year Ago Avg. | $2.653 | $2.811 | $3.281 | $3.324 |