| Llantrisant to Nyon | 562.26 mi (904.86 km) |
| Llantrisant to Oberriet | 649.49 mi (1,045.25 km) |
| Llantrisant to Obersiggenthal | 592.70 mi (953.86 km) |
| Llantrisant to Oberwil | 562.85 mi (905.82 km) |
| Llantrisant to Oberwingert | 610.46 mi (982.45 km) |
| Llantrisant to Oftringen | 584.49 mi (940.64 km) |
| Llantrisant to Olten | 582.55 mi (937.53 km) |
| Llantrisant to Onex | 567.15 mi (912.74 km) |
| Llantrisant to Opfikon | 605.51 mi (974.48 km) |
| Llantrisant to Ostermundigen | 582.67 mi (937.71 km) |
| Llantrisant to Payerne | 567.81 mi (913.80 km) |
| Llantrisant to Pfaffikon | 616.53 mi (992.21 km) |
| Llantrisant to Plan-les-Ouates | 568.53 mi (914.95 km) |
| Llantrisant to Pratteln | 568.39 mi (914.73 km) |
| Llantrisant to Prilly | 568.30 mi (914.58 km) |
