| North Potomac to Selargius | 4,428.97 mi (7,127.73 km) |
| North Potomac to Selvazzano Dentro | 4,334.14 mi (6,975.13 km) |
| North Potomac to Senago | 4,214.68 mi (6,782.87 km) |
| North Potomac to Senigallia | 4,452.95 mi (7,166.33 km) |
| North Potomac to Seravezza | 4,314.09 mi (6,942.85 km) |
| North Potomac to Seregno | 4,215.39 mi (6,784.02 km) |
| North Potomac to Seriate | 4,236.39 mi (6,817.81 km) |
| North Potomac to Sermoneta | 4,519.78 mi (7,273.88 km) |
| North Potomac to Serramanna | 4,412.04 mi (7,100.49 km) |
| North Potomac to Serravalle Pistoiese | 4,343.51 mi (6,990.21 km) |
| North Potomac to Sessa Aurunca | 4,573.17 mi (7,359.81 km) |
| North Potomac to Sesto Calende | 4,188.48 mi (6,740.70 km) |
| North Potomac to Sesto Fiorentino | 4,361.68 mi (7,019.45 km) |
| North Potomac to Sesto San Giovanni | 4,220.57 mi (6,792.35 km) |
| North Potomac to Sestri Levante | 4,268.48 mi (6,869.45 km) |
