| Key Largo to Noventa Vicentina | 5,094.68 mi (8,199.09 km) |
| Key Largo to Novi di Modena | 5,074.51 mi (8,166.63 km) |
| Key Largo to Novi Ligure | 4,979.19 mi (8,013.22 km) |
| Key Largo to Nuoro | 5,104.16 mi (8,214.35 km) |
| Key Largo to Occhiobello | 5,105.25 mi (8,216.10 km) |
| Key Largo to Oderzo | 5,126.77 mi (8,250.74 km) |
| Key Largo to Oggiono | 4,983.51 mi (8,020.19 km) |
| Key Largo to Olbia | 5,098.57 mi (8,205.35 km) |
| Key Largo to Oleggio | 4,954.43 mi (7,973.39 km) |
| Key Largo to Olgiate Comasco | 4,965.93 mi (7,991.89 km) |
| Key Largo to Olgiate Olona | 4,965.25 mi (7,990.80 km) |
| Key Largo to Omegna | 4,938.26 mi (7,947.36 km) |
| Key Largo to Opera | 4,985.91 mi (8,024.05 km) |
| Key Largo to Oppeano | 5,078.25 mi (8,172.65 km) |
| Key Largo to Orbassano | 4,915.73 mi (7,911.10 km) |
