| Gourock to Nyon | 814.27 mi (1,310.44 km) |
| Gourock to Oberriet | 855.12 mi (1,376.19 km) |
| Gourock to Obersiggenthal | 808.03 mi (1,300.40 km) |
| Gourock to Oberwil | 785.32 mi (1,263.85 km) |
| Gourock to Oberwingert | 820.51 mi (1,320.48 km) |
| Gourock to Oftringen | 806.42 mi (1,297.80 km) |
| Gourock to Olten | 804.12 mi (1,294.10 km) |
| Gourock to Onex | 822.77 mi (1,324.11 km) |
| Gourock to Opfikon | 818.98 mi (1,318.01 km) |
| Gourock to Ostermundigen | 814.47 mi (1,310.77 km) |
| Gourock to Payerne | 807.24 mi (1,299.12 km) |
| Gourock to Pfaffikon | 828.94 mi (1,334.06 km) |
| Gourock to Plan-les-Ouates | 824.16 mi (1,326.36 km) |
| Gourock to Pratteln | 789.29 mi (1,270.24 km) |
| Gourock to Prilly | 814.82 mi (1,311.33 km) |
