| Sumner to Noventa Vicentina | 5,457.70 mi (8,783.31 km) |
| Sumner to Novi di Modena | 5,465.50 mi (8,795.87 km) |
| Sumner to Novi Ligure | 5,420.18 mi (8,722.93 km) |
| Sumner to Nuoro | 5,697.23 mi (9,168.81 km) |
| Sumner to Occhiobello | 5,480.52 mi (8,820.04 km) |
| Sumner to Oderzo | 5,450.87 mi (8,772.32 km) |
| Sumner to Oggiono | 5,374.11 mi (8,648.79 km) |
| Sumner to Olbia | 5,666.11 mi (9,118.72 km) |
| Sumner to Oleggio | 5,366.82 mi (8,637.07 km) |
| Sumner to Olgiate Comasco | 5,364.48 mi (8,633.29 km) |
| Sumner to Olgiate Olona | 5,371.20 mi (8,644.12 km) |
| Sumner to Omegna | 5,344.74 mi (8,601.53 km) |
| Sumner to Opera | 5,394.36 mi (8,681.39 km) |
| Sumner to Oppeano | 5,448.17 mi (8,767.98 km) |
| Sumner to Orbassano | 5,373.31 mi (8,647.51 km) |
