| Williston to Opwijk | 4,368.82 mi (7,030.93 km) |
| Williston to Ostend | 4,317.06 mi (6,947.64 km) |
| Williston to Oud-Heverlee | 4,390.25 mi (7,065.43 km) |
| Williston to Oud-Turnhout | 4,376.35 mi (7,043.06 km) |
| Williston to Oudenaarde | 4,356.36 mi (7,010.89 km) |
| Williston to Oudenburg | 4,321.61 mi (6,954.96 km) |
| Williston to Oupeye | 4,426.41 mi (7,123.61 km) |
| Williston to Overijse | 4,388.57 mi (7,062.73 km) |
| Williston to Overpelt | 4,394.47 mi (7,072.21 km) |
| Williston to Paal | 4,395.73 mi (7,074.24 km) |
| Williston to Peer | 4,399.71 mi (7,080.65 km) |
| Williston to Pepinster | 4,438.72 mi (7,143.43 km) |
| Williston to Peruwelz | 4,371.97 mi (7,036.01 km) |
| Williston to Perwez | 4,405.07 mi (7,089.27 km) |
| Williston to Philippeville | 4,417.62 mi (7,109.47 km) |
