| Waltham to Opwijk | 3,465.34 mi (5,576.92 km) |
| Waltham to Ostend | 3,407.72 mi (5,484.19 km) |
| Waltham to Oud-Heverlee | 3,488.32 mi (5,613.90 km) |
| Waltham to Oud-Turnhout | 3,488.74 mi (5,614.58 km) |
| Waltham to Oudenaarde | 3,444.58 mi (5,543.52 km) |
| Waltham to Oudenburg | 3,412.02 mi (5,491.11 km) |
| Waltham to Oupeye | 3,531.09 mi (5,682.74 km) |
| Waltham to Overijse | 3,484.19 mi (5,607.26 km) |
| Waltham to Overpelt | 3,508.70 mi (5,646.71 km) |
| Waltham to Paal | 3,503.47 mi (5,638.29 km) |
| Waltham to Peer | 3,512.35 mi (5,652.59 km) |
| Waltham to Pepinster | 3,541.87 mi (5,700.09 km) |
| Waltham to Peruwelz | 3,452.26 mi (5,555.88 km) |
| Waltham to Perwez | 3,499.73 mi (5,632.27 km) |
| Waltham to Philippeville | 3,499.95 mi (5,632.63 km) |
