| Grass Valley to Opwijk | 5,381.94 mi (8,661.39 km) |
| Grass Valley to Ostend | 5,332.57 mi (8,581.94 km) |
| Grass Valley to Oud-Heverlee | 5,402.56 mi (8,694.59 km) |
| Grass Valley to Oud-Turnhout | 5,385.76 mi (8,667.55 km) |
| Grass Valley to Oudenaarde | 5,371.56 mi (8,644.69 km) |
| Grass Valley to Oudenburg | 5,337.07 mi (8,589.19 km) |
| Grass Valley to Oupeye | 5,436.44 mi (8,749.10 km) |
| Grass Valley to Overijse | 5,401.46 mi (8,692.82 km) |
| Grass Valley to Overpelt | 5,403.04 mi (8,695.36 km) |
| Grass Valley to Paal | 5,405.75 mi (8,699.72 km) |
| Grass Valley to Peer | 5,408.53 mi (8,704.19 km) |
| Grass Valley to Pepinster | 5,448.83 mi (8,769.04 km) |
| Grass Valley to Peruwelz | 5,388.54 mi (8,672.02 km) |
| Grass Valley to Perwez | 5,417.81 mi (8,719.13 km) |
| Grass Valley to Philippeville | 5,432.80 mi (8,743.25 km) |
