| Trondheim to Octeville | 1,054.19 mi (1,696.56 km) |
| Trondheim to Oignies | 936.42 mi (1,507.02 km) |
| Trondheim to Oissel | 1,033.86 mi (1,663.84 km) |
| Trondheim to Olivet | 1,123.01 mi (1,807.32 km) |
| Trondheim to Ollioules | 1,413.60 mi (2,274.97 km) |
| Trondheim to Olonne-sur-Mer | 1,257.96 mi (2,024.49 km) |
| Trondheim to Oloron-Sainte-Marie | 1,465.17 mi (2,357.97 km) |
| Trondheim to Onet Village | 1,352.60 mi (2,176.80 km) |
| Trondheim to Onnaing | 935.60 mi (1,505.71 km) |
| Trondheim to Orange | 1,351.04 mi (2,174.29 km) |
| Trondheim to Orchies | 933.38 mi (1,502.13 km) |
| Trondheim to Orleans | 1,120.33 mi (1,803.00 km) |
| Trondheim to Orly | 1,058.59 mi (1,703.64 km) |
| Trondheim to Ormesson-sur-Marne | 1,054.23 mi (1,696.61 km) |
| Trondheim to Orsay | 1,063.89 mi (1,712.17 km) |
