| Piqua to Rosolini | 5,059.29 mi (8,142.14 km) |
| Piqua to Rossano | 5,014.15 mi (8,069.49 km) |
| Piqua to Rottofreno | 4,499.51 mi (7,241.26 km) |
| Piqua to Rovato | 4,498.81 mi (7,240.14 km) |
| Piqua to Roverbella | 4,541.35 mi (7,308.60 km) |
| Piqua to Rovereto | 4,529.40 mi (7,289.37 km) |
| Piqua to Rovigo | 4,590.11 mi (7,387.07 km) |
| Piqua to Rozzano | 4,471.04 mi (7,195.44 km) |
| Piqua to Rubano | 4,576.10 mi (7,364.52 km) |
| Piqua to Rubiera | 4,565.53 mi (7,347.51 km) |
| Piqua to Ruffano | 5,063.46 mi (8,148.85 km) |
| Piqua to Russi | 4,627.17 mi (7,446.71 km) |
| Piqua to Rutigliano | 4,967.08 mi (7,993.74 km) |
| Piqua to Ruvo di Puglia | 4,942.15 mi (7,953.62 km) |
| Piqua to Sabaudia | 4,790.55 mi (7,709.65 km) |
