| Piqua to Racale | 5,057.99 mi (8,140.05 km) |
| Piqua to Racconigi | 4,433.16 mi (7,134.48 km) |
| Piqua to Raffadali | 4,972.69 mi (8,002.76 km) |
| Piqua to Ragusa | 5,045.13 mi (8,119.35 km) |
| Piqua to Ramacca | 5,024.38 mi (8,085.96 km) |
| Piqua to Randazzo | 5,014.06 mi (8,069.34 km) |
| Piqua to Rapallo | 4,513.01 mi (7,262.99 km) |
| Piqua to Ravanusa | 4,997.46 mi (8,042.63 km) |
| Piqua to Ravenna | 4,632.48 mi (7,455.25 km) |
| Piqua to Recanati | 4,727.71 mi (7,608.51 km) |
| Piqua to Recco | 4,508.93 mi (7,256.42 km) |
| Piqua to Reggello | 4,633.68 mi (7,457.18 km) |
| Piqua to Reggio di Calabria | 5,034.34 mi (8,101.99 km) |
| Piqua to Reggio Emilia | 4,557.48 mi (7,334.56 km) |
| Piqua to Reggiolo | 4,556.71 mi (7,333.32 km) |
