| Rancho Cucamonga to Racale | 6,588.95 mi (10,603.88 km) |
| Rancho Cucamonga to Racconigi | 5,997.16 mi (9,651.49 km) |
| Rancho Cucamonga to Raffadali | 6,581.20 mi (10,591.41 km) |
| Rancho Cucamonga to Ragusa | 6,648.10 mi (10,699.08 km) |
| Rancho Cucamonga to Ramacca | 6,622.12 mi (10,657.26 km) |
| Rancho Cucamonga to Randazzo | 6,603.26 mi (10,626.93 km) |
| Rancho Cucamonga to Rapallo | 6,069.67 mi (9,768.19 km) |
| Rancho Cucamonga to Ravanusa | 6,603.54 mi (10,627.36 km) |
| Rancho Cucamonga to Ravenna | 6,161.47 mi (9,915.92 km) |
| Rancho Cucamonga to Recanati | 6,258.27 mi (10,071.71 km) |
| Rancho Cucamonga to Recco | 6,066.07 mi (9,762.40 km) |
| Rancho Cucamonga to Reggello | 6,179.17 mi (9,944.42 km) |
| Rancho Cucamonga to Reggio di Calabria | 6,613.84 mi (10,643.95 km) |
| Rancho Cucamonga to Reggio Emilia | 6,096.76 mi (9,811.78 km) |
| Rancho Cucamonga to Reggiolo | 6,091.22 mi (9,802.88 km) |
