| San Luis Obispo to Racale | 6,613.85 mi (10,643.96 km) |
| San Luis Obispo to Racconigi | 6,032.58 mi (9,708.51 km) |
| San Luis Obispo to Raffadali | 6,620.75 mi (10,655.06 km) |
| San Luis Obispo to Ragusa | 6,686.08 mi (10,760.21 km) |
| San Luis Obispo to Ramacca | 6,659.25 mi (10,717.03 km) |
| San Luis Obispo to Randazzo | 6,638.88 mi (10,684.25 km) |
| San Luis Obispo to Rapallo | 6,103.22 mi (9,822.18 km) |
| San Luis Obispo to Ravanusa | 6,642.45 mi (10,689.98 km) |
| San Luis Obispo to Ravenna | 6,189.41 mi (9,960.89 km) |
| San Luis Obispo to Recanati | 6,285.71 mi (10,115.88 km) |
| San Luis Obispo to Recco | 6,099.74 mi (9,816.58 km) |
| San Luis Obispo to Reggello | 6,209.88 mi (9,993.84 km) |
| San Luis Obispo to Reggio di Calabria | 6,647.52 mi (10,698.15 km) |
| San Luis Obispo to Reggio Emilia | 6,127.01 mi (9,860.47 km) |
| San Luis Obispo to Reggiolo | 6,120.69 mi (9,850.29 km) |
