| Mercer Island to Plombieres | 4,981.38 mi (8,016.76 km) |
| Mercer Island to Pont-a-Celles | 4,955.13 mi (7,974.51 km) |
| Mercer Island to Poperinge | 4,894.02 mi (7,876.17 km) |
| Mercer Island to Profondeville | 4,975.13 mi (8,006.70 km) |
| Mercer Island to Putte | 4,930.97 mi (7,935.63 km) |
| Mercer Island to Puurs | 4,920.73 mi (7,919.15 km) |
| Mercer Island to Quaregnon | 4,946.74 mi (7,961.01 km) |
| Mercer Island to Raeren | 4,988.31 mi (8,027.92 km) |
| Mercer Island to Ranst | 4,920.40 mi (7,918.61 km) |
| Mercer Island to Ravels | 4,921.99 mi (7,921.18 km) |
| Mercer Island to Retie | 4,929.32 mi (7,932.97 km) |
| Mercer Island to Riemst | 4,968.55 mi (7,996.11 km) |
| Mercer Island to Rijkevorsel | 4,917.22 mi (7,913.50 km) |
| Mercer Island to Rixensart | 4,947.41 mi (7,962.09 km) |
| Mercer Island to Rochefort | 4,995.76 mi (8,039.90 km) |
