| North Potomac to Spello | 4,454.88 mi (7,169.43 km) |
| North Potomac to Spilamberto | 4,330.05 mi (6,968.54 km) |
| North Potomac to Spilimbergo | 4,355.25 mi (7,009.10 km) |
| North Potomac to Spinea | 4,346.39 mi (6,994.84 km) |
| North Potomac to Spoleto | 4,463.66 mi (7,183.57 km) |
| North Potomac to Spoltore | 4,537.71 mi (7,302.74 km) |
| North Potomac to Spresiano | 4,340.34 mi (6,985.11 km) |
| North Potomac to Squinzano | 4,783.59 mi (7,698.44 km) |
| North Potomac to Statte | 4,741.42 mi (7,630.58 km) |
| North Potomac to Stezzano | 4,234.71 mi (6,815.11 km) |
| North Potomac to Strada | 4,375.30 mi (7,041.36 km) |
| North Potomac to Stradella | 4,237.97 mi (6,820.36 km) |
| North Potomac to Striano | 4,616.45 mi (7,429.46 km) |
| North Potomac to Subiaco | 4,511.13 mi (7,259.96 km) |
| North Potomac to Sulmona | 4,543.17 mi (7,311.52 km) |
