| Didcot to Southern Pines (North Carolina) | 3,885.33 mi (6,252.84 km) |
| Didcot to Southfield (Michigan) | 3,706.15 mi (5,964.48 km) |
| Didcot to Southgate (Michigan) | 3,716.16 mi (5,980.58 km) |
| Didcot to Southlake (Texas) | 4,706.52 mi (7,574.42 km) |
| Didcot to Spanaway (Washington) | 4,780.81 mi (7,693.97 km) |
| Didcot to Spanish Fork (Utah) | 4,847.66 mi (7,801.56 km) |
| Didcot to Spanish Lake (Missouri) | 4,146.91 mi (6,673.81 km) |
| Didcot to Spanish Springs (Nevada) | 5,125.58 mi (8,248.82 km) |
| Didcot to Sparks (Nevada) | 5,131.72 mi (8,258.71 km) |
| Didcot to Spartanburg (South Carolina) | 4,000.82 mi (6,438.70 km) |
| Didcot to Spearfish (South Dakota) | 4,358.17 mi (7,013.79 km) |
| Didcot to Speedway (Indiana) | 3,945.31 mi (6,349.36 km) |
| Didcot to Spencer (Iowa) | 4,122.38 mi (6,634.33 km) |
| Didcot to Spokane (Washington) | 4,611.81 mi (7,421.99 km) |
| Didcot to Spokane Valley (Washington) | 4,606.45 mi (7,413.37 km) |
