| Rancho Cucamonga to Rosolini | 6,661.46 mi (10,720.58 km) |
| Rancho Cucamonga to Rossano | 6,565.45 mi (10,566.08 km) |
| Rancho Cucamonga to Rottofreno | 6,043.27 mi (9,725.71 km) |
| Rancho Cucamonga to Rovato | 6,031.21 mi (9,706.29 km) |
| Rancho Cucamonga to Roverbella | 6,071.25 mi (9,770.74 km) |
| Rancho Cucamonga to Rovereto | 6,047.71 mi (9,732.85 km) |
| Rancho Cucamonga to Rovigo | 6,113.34 mi (9,838.47 km) |
| Rancho Cucamonga to Rozzano | 6,013.57 mi (9,677.90 km) |
| Rancho Cucamonga to Rubano | 6,094.30 mi (9,807.83 km) |
| Rancho Cucamonga to Rubiera | 6,104.17 mi (9,823.72 km) |
| Rancho Cucamonga to Ruffano | 6,592.62 mi (10,609.80 km) |
| Rancho Cucamonga to Russi | 6,158.29 mi (9,910.81 km) |
| Rancho Cucamonga to Rutigliano | 6,497.85 mi (10,457.28 km) |
| Rancho Cucamonga to Ruvo di Puglia | 6,474.75 mi (10,420.10 km) |
| Rancho Cucamonga to Sabaudia | 6,354.60 mi (10,226.73 km) |
