| Mercer Island to Racale | 5,917.17 mi (9,522.76 km) |
| Mercer Island to Racconigi | 5,371.23 mi (8,644.15 km) |
| Mercer Island to Raffadali | 5,963.71 mi (9,597.66 km) |
| Mercer Island to Ragusa | 6,023.75 mi (9,694.29 km) |
| Mercer Island to Ramacca | 5,994.88 mi (9,647.83 km) |
| Mercer Island to Randazzo | 5,970.51 mi (9,608.61 km) |
| Mercer Island to Rapallo | 5,435.65 mi (8,747.84 km) |
| Mercer Island to Ravanusa | 5,983.30 mi (9,629.19 km) |
| Mercer Island to Ravenna | 5,505.40 mi (8,860.09 km) |
| Mercer Island to Recanati | 5,599.29 mi (9,011.19 km) |
| Mercer Island to Recco | 5,432.54 mi (8,742.83 km) |
| Mercer Island to Reggello | 5,533.14 mi (8,904.73 km) |
| Mercer Island to Reggio di Calabria | 5,973.70 mi (9,613.75 km) |
| Mercer Island to Reggio Emilia | 5,450.01 mi (8,770.95 km) |
| Mercer Island to Reggiolo | 5,441.60 mi (8,757.41 km) |
