| Piqua to Rochefort | 4,027.89 mi (6,482.27 km) |
| Piqua to Rodez | 4,231.58 mi (6,810.08 km) |
| Piqua to Rognac | 4,375.82 mi (7,042.20 km) |
| Piqua to Roissy-en-Brie | 4,088.89 mi (6,580.43 km) |
| Piqua to Romainville | 4,077.17 mi (6,561.57 km) |
| Piqua to Romans-sur-Isere | 4,312.98 mi (6,941.07 km) |
| Piqua to Rombas | 4,211.46 mi (6,777.70 km) |
| Piqua to Romilly-sur-Seine | 4,141.15 mi (6,664.54 km) |
| Piqua to Ronchin | 4,049.50 mi (6,517.04 km) |
| Piqua to Roncq | 4,046.18 mi (6,511.69 km) |
| Piqua to Roquebrune-sur-Argens | 4,437.49 mi (7,141.44 km) |
| Piqua to Roquevaire | 4,396.76 mi (7,075.90 km) |
| Piqua to Rosny-sous-Bois | 4,079.67 mi (6,565.59 km) |
| Piqua to Roubaix | 4,050.54 mi (6,518.71 km) |
| Piqua to Rouen | 4,005.49 mi (6,446.22 km) |
