| Dendermonde to Oignies | 62.11 mi (99.96 km) |
| Dendermonde to Oissel | 177.10 mi (285.01 km) |
| Dendermonde to Olivet | 240.21 mi (386.58 km) |
| Dendermonde to Ollioules | 551.53 mi (887.60 km) |
| Dendermonde to Olonne-sur-Mer | 409.65 mi (659.27 km) |
| Dendermonde to Oloron-Sainte-Marie | 584.79 mi (941.14 km) |
| Dendermonde to Onet Village | 465.96 mi (749.89 km) |
| Dendermonde to Onnaing | 49.71 mi (80.00 km) |
| Dendermonde to Orange | 477.54 mi (768.52 km) |
| Dendermonde to Orchies | 53.75 mi (86.50 km) |
| Dendermonde to Orleans | 237.61 mi (382.40 km) |
| Dendermonde to Orly | 175.48 mi (282.41 km) |
| Dendermonde to Ormesson-sur-Marne | 170.12 mi (273.78 km) |
| Dendermonde to Orsay | 182.43 mi (293.60 km) |
| Dendermonde to Orthez | 568.85 mi (915.47 km) |
