| Ottawa to Redon | 4,067.16 mi (6,545.46 km) |
| Ottawa to Reims | 4,253.59 mi (6,845.49 km) |
| Ottawa to Rennes | 4,068.14 mi (6,547.04 km) |
| Ottawa to Revel | 4,385.76 mi (7,058.20 km) |
| Ottawa to Reze | 4,103.67 mi (6,604.21 km) |
| Ottawa to Riedisheim | 4,438.46 mi (7,143.01 km) |
| Ottawa to Rillieux-la-Pape | 4,415.34 mi (7,105.80 km) |
| Ottawa to Riom | 4,340.55 mi (6,985.44 km) |
| Ottawa to Riorges | 4,372.48 mi (7,036.82 km) |
| Ottawa to Ris-Orangis | 4,212.56 mi (6,779.47 km) |
| Ottawa to Rive-de-Gier | 4,415.13 mi (7,105.47 km) |
| Ottawa to Rivesaltes | 4,448.60 mi (7,159.32 km) |
| Ottawa to Rixheim | 4,439.89 mi (7,145.32 km) |
| Ottawa to Roanne | 4,373.85 mi (7,039.02 km) |
| Ottawa to Roche-la-Moliere | 4,406.90 mi (7,092.22 km) |
