| Sumter to Nyon | 4,424.13 mi (7,119.95 km) |
| Sumter to Oberriet | 4,542.45 mi (7,310.37 km) |
| Sumter to Obersiggenthal | 4,483.23 mi (7,215.07 km) |
| Sumter to Oberwil | 4,450.91 mi (7,163.06 km) |
| Sumter to Oberwingert | 4,502.76 mi (7,246.50 km) |
| Sumter to Oftringen | 4,471.85 mi (7,196.74 km) |
| Sumter to Olten | 4,470.21 mi (7,194.11 km) |
| Sumter to Onex | 4,423.64 mi (7,119.17 km) |
| Sumter to Opfikon | 4,496.47 mi (7,236.36 km) |
| Sumter to Ostermundigen | 4,463.36 mi (7,183.09 km) |
| Sumter to Payerne | 4,443.01 mi (7,150.34 km) |
| Sumter to Pfaffikon | 4,507.59 mi (7,254.27 km) |
| Sumter to Plan-les-Ouates | 4,424.83 mi (7,121.07 km) |
| Sumter to Pratteln | 4,457.06 mi (7,172.95 km) |
| Sumter to Prilly | 4,436.15 mi (7,139.30 km) |
