| Piqua to Redon | 3,928.17 mi (6,321.79 km) |
| Piqua to Reims | 4,129.34 mi (6,645.52 km) |
| Piqua to Rennes | 3,931.51 mi (6,327.16 km) |
| Piqua to Revel | 4,237.26 mi (6,819.21 km) |
| Piqua to Reze | 3,963.60 mi (6,378.80 km) |
| Piqua to Riedisheim | 4,313.50 mi (6,941.91 km) |
| Piqua to Rillieux-la-Pape | 4,279.60 mi (6,887.36 km) |
| Piqua to Riom | 4,202.36 mi (6,763.04 km) |
| Piqua to Riorges | 4,236.22 mi (6,817.54 km) |
| Piqua to Ris-Orangis | 4,083.67 mi (6,572.03 km) |
| Piqua to Rive-de-Gier | 4,277.92 mi (6,884.65 km) |
| Piqua to Rivesaltes | 4,299.07 mi (6,918.69 km) |
| Piqua to Rixheim | 4,314.99 mi (6,944.31 km) |
| Piqua to Roanne | 4,237.61 mi (6,819.78 km) |
| Piqua to Roche-la-Moliere | 4,268.90 mi (6,870.13 km) |
