| Tromso to Nuth | 1,364.57 mi (2,196.06 km) |
| Tromso to Oegstgeest | 1,295.12 mi (2,084.30 km) |
| Tromso to Oirschot | 1,331.51 mi (2,142.86 km) |
| Tromso to Oisterwijk | 1,327.01 mi (2,135.61 km) |
| Tromso to Oldebroek | 1,261.58 mi (2,030.31 km) |
| Tromso to Oldenzaal | 1,260.04 mi (2,027.83 km) |
| Tromso to Ommen | 1,251.76 mi (2,014.51 km) |
| Tromso to Oosterend | 1,222.81 mi (1,967.92 km) |
| Tromso to Oosterhout | 1,326.75 mi (2,135.19 km) |
| Tromso to Oosterwolde | 1,221.34 mi (1,965.55 km) |
| Tromso to Oostzaan | 1,273.76 mi (2,049.92 km) |
| Tromso to Opmeer | 1,255.26 mi (2,020.14 km) |
| Tromso to Oss | 1,311.35 mi (2,110.42 km) |
| Tromso to Oud-Beijerland | 1,320.29 mi (2,124.79 km) |
| Tromso to Oudenbosch | 1,334.05 mi (2,146.94 km) |
