| Grefrath to Plombieres | 44.99 mi (72.40 km) |
| Grefrath to Pont-a-Celles | 104.20 mi (167.69 km) |
| Grefrath to Poperinge | 160.34 mi (258.05 km) |
| Grefrath to Profondeville | 92.24 mi (148.45 km) |
| Grefrath to Putte | 76.53 mi (123.17 km) |
| Grefrath to Puurs | 90.99 mi (146.43 km) |
| Grefrath to Quaregnon | 124.58 mi (200.50 km) |
| Grefrath to Raeren | 46.16 mi (74.28 km) |
| Grefrath to Ranst | 77.99 mi (125.50 km) |
| Grefrath to Ravels | 57.89 mi (93.17 km) |
| Grefrath to Retie | 55.25 mi (88.91 km) |
| Grefrath to Riemst | 48.55 mi (78.13 km) |
| Grefrath to Rijkevorsel | 67.94 mi (109.34 km) |
| Grefrath to Rixensart | 89.45 mi (143.96 km) |
| Grefrath to Rochefort | 94.58 mi (152.21 km) |
