| South Houston to Racale | 6,003.96 mi (9,662.44 km) |
| South Houston to Racconigi | 5,378.23 mi (8,655.43 km) |
| South Houston to Raffadali | 5,907.00 mi (9,506.40 km) |
| South Houston to Ragusa | 5,980.03 mi (9,623.93 km) |
| South Houston to Ramacca | 5,960.46 mi (9,592.43 km) |
| South Houston to Randazzo | 5,951.78 mi (9,578.47 km) |
| South Houston to Rapallo | 5,458.60 mi (8,784.77 km) |
| South Houston to Ravanusa | 5,932.09 mi (9,546.77 km) |
| South Houston to Ravenna | 5,580.58 mi (8,981.08 km) |
| South Houston to Recanati | 5,675.24 mi (9,133.42 km) |
| South Houston to Recco | 5,454.48 mi (8,778.14 km) |
| South Houston to Reggello | 5,580.01 mi (8,980.15 km) |
| South Houston to Reggio di Calabria | 5,973.62 mi (9,613.61 km) |
| South Houston to Reggio Emilia | 5,504.85 mi (8,859.21 km) |
| South Houston to Reggiolo | 5,504.58 mi (8,858.77 km) |
