| Waltham to Opole | 4,015.53 mi (6,462.37 km) |
| Waltham to Orzesze | 4,064.51 mi (6,541.20 km) |
| Waltham to Osowa | 3,910.60 mi (6,293.51 km) |
| Waltham to Ostroda | 3,987.87 mi (6,417.86 km) |
| Waltham to Ostroleka | 4,066.84 mi (6,544.94 km) |
| Waltham to Ostrow Mazowiecka | 4,088.17 mi (6,579.27 km) |
| Waltham to Ostrow Wielkopolski | 3,977.91 mi (6,401.83 km) |
| Waltham to Ostrowiec Swietokrzyski | 4,136.60 mi (6,657.21 km) |
| Waltham to Ostrzeszow | 3,990.12 mi (6,421.47 km) |
| Waltham to Oswiecim | 4,086.44 mi (6,576.49 km) |
| Waltham to Otwock | 4,089.44 mi (6,581.31 km) |
| Waltham to Ozarow Mazowiecki | 4,068.90 mi (6,548.26 km) |
| Waltham to Ozimek | 4,025.96 mi (6,479.16 km) |
| Waltham to Ozorkow | 4,021.82 mi (6,472.49 km) |
| Waltham to Pabianice | 4,036.40 mi (6,495.95 km) |
