| Round Rock to Racale | 6,062.73 mi (9,757.02 km) |
| Round Rock to Racconigi | 5,438.07 mi (8,751.73 km) |
| Round Rock to Raffadali | 5,976.28 mi (9,617.89 km) |
| Round Rock to Ragusa | 6,048.89 mi (9,734.75 km) |
| Round Rock to Ramacca | 6,028.44 mi (9,701.83 km) |
| Round Rock to Randazzo | 6,018.47 mi (9,685.79 km) |
| Round Rock to Rapallo | 5,517.86 mi (8,880.14 km) |
| Round Rock to Ravanusa | 6,001.14 mi (9,657.90 km) |
| Round Rock to Ravenna | 5,636.70 mi (9,071.39 km) |
| Round Rock to Recanati | 5,732.11 mi (9,224.94 km) |
| Round Rock to Recco | 5,513.78 mi (8,873.58 km) |
| Round Rock to Reggello | 5,638.40 mi (9,074.12 km) |
| Round Rock to Reggio di Calabria | 6,039.02 mi (9,718.87 km) |
| Round Rock to Reggio Emilia | 5,561.96 mi (8,951.11 km) |
| Round Rock to Reggiolo | 5,561.03 mi (8,949.61 km) |
