| Waltham Cross to Opole | 779.43 mi (1,254.37 km) |
| Waltham Cross to Orzesze | 822.69 mi (1,323.99 km) |
| Waltham Cross to Osowa | 788.88 mi (1,269.58 km) |
| Waltham Cross to Ostroda | 846.08 mi (1,361.63 km) |
| Waltham Cross to Ostroleka | 912.54 mi (1,468.59 km) |
| Waltham Cross to Ostrow Mazowiecka | 927.47 mi (1,492.62 km) |
| Waltham Cross to Ostrow Wielkopolski | 763.00 mi (1,227.93 km) |
| Waltham Cross to Ostrowiec Swietokrzyski | 923.84 mi (1,486.78 km) |
| Waltham Cross to Ostrzeszow | 770.17 mi (1,239.46 km) |
| Waltham Cross to Oswiecim | 844.87 mi (1,359.69 km) |
| Waltham Cross to Otwock | 905.27 mi (1,456.90 km) |
| Waltham Cross to Ozarow Mazowiecki | 884.86 mi (1,424.05 km) |
| Waltham Cross to Ozimek | 791.31 mi (1,273.50 km) |
| Waltham Cross to Ozorkow | 822.67 mi (1,323.96 km) |
| Waltham Cross to Pabianice | 829.59 mi (1,335.10 km) |
