| Seia to Southwick | 1,042.58 mi (1,677.88 km) |
| Seia to Southwick | 803.86 mi (1,293.69 km) |
| Seia to Sowerby Bridge | 956.93 mi (1,540.03 km) |
| Seia to Spalding | 925.15 mi (1,488.89 km) |
| Seia to Spennymoor | 1,025.89 mi (1,651.01 km) |
| Seia to Spitalfields | 848.48 mi (1,365.49 km) |
| Seia to Spondon | 912.87 mi (1,469.13 km) |
| Seia to Stafford | 895.16 mi (1,440.61 km) |
| Seia to Staines-upon-Thames | 834.70 mi (1,343.31 km) |
| Seia to Stalybridge | 940.39 mi (1,513.42 km) |
| Seia to Stamford | 911.14 mi (1,466.34 km) |
| Seia to Standish | 939.42 mi (1,511.84 km) |
| Seia to Stanford le Hope | 858.79 mi (1,382.09 km) |
| Seia to Stanley | 963.12 mi (1,549.98 km) |
| Seia to Stanmore | 849.87 mi (1,367.74 km) |
