| Ottawa to Cabestany | 4,454.89 mi (7,169.46 km) |
| Ottawa to Cabries | 4,527.10 mi (7,285.66 km) |
| Ottawa to Cachan | 4,204.38 mi (6,766.29 km) |
| Ottawa to Caen | 4,084.81 mi (6,573.87 km) |
| Ottawa to Cagnes-sur-Mer | 4,590.75 mi (7,388.09 km) |
| Ottawa to Cahors | 4,325.31 mi (6,960.91 km) |
| Ottawa to Calais | 4,111.35 mi (6,616.58 km) |
| Ottawa to Caluire-et-Cuire | 4,414.28 mi (7,104.10 km) |
| Ottawa to Cambrai | 4,190.43 mi (6,743.84 km) |
| Ottawa to Canet-en-Roussillon | 4,456.65 mi (7,172.29 km) |
| Ottawa to Cannes | 4,589.73 mi (7,386.46 km) |
| Ottawa to Canteleu | 4,130.82 mi (6,647.91 km) |
| Ottawa to Capbreton | 4,233.27 mi (6,812.78 km) |
| Ottawa to Carcassonne | 4,409.70 mi (7,096.73 km) |
| Ottawa to Carmaux | 4,370.05 mi (7,032.91 km) |
