| Great Missenden to Noventa Vicentina | 713.24 mi (1,147.85 km) |
| Great Missenden to Novi di Modena | 709.94 mi (1,142.54 km) |
| Great Missenden to Novi Ligure | 647.93 mi (1,042.74 km) |
| Great Missenden to Nuoro | 920.70 mi (1,481.72 km) |
| Great Missenden to Occhiobello | 732.14 mi (1,178.27 km) |
| Great Missenden to Oderzo | 725.79 mi (1,168.05 km) |
| Great Missenden to Oggiono | 613.30 mi (987.01 km) |
| Great Missenden to Olbia | 888.56 mi (1,430.00 km) |
| Great Missenden to Oleggio | 598.84 mi (963.74 km) |
| Great Missenden to Olgiate Comasco | 600.45 mi (966.34 km) |
| Great Missenden to Olgiate Olona | 605.27 mi (974.08 km) |
| Great Missenden to Omegna | 577.27 mi (929.03 km) |
| Great Missenden to Opera | 628.91 mi (1,012.13 km) |
| Great Missenden to Oppeano | 700.04 mi (1,126.61 km) |
| Great Missenden to Orbassano | 597.05 mi (960.86 km) |
