| Herisau to Oerlinghausen | 317.81 mi (511.47 km) |
| Herisau to Oestrich-Winkel | 189.80 mi (305.45 km) |
| Herisau to Offenburg | 97.03 mi (156.15 km) |
| Herisau to Oftersheim | 140.83 mi (226.64 km) |
| Herisau to Ohrdruf | 247.06 mi (397.61 km) |
| Herisau to Ohringen | 125.98 mi (202.74 km) |
| Herisau to Olbernhau | 292.16 mi (470.19 km) |
| Herisau to Olching | 110.63 mi (178.04 km) |
| Herisau to Oldenburg | 400.71 mi (644.89 km) |
| Herisau to Oldenburg in Holstein | 483.04 mi (777.38 km) |
| Herisau to Olfen | 311.06 mi (500.60 km) |
| Herisau to Olpe | 259.24 mi (417.20 km) |
| Herisau to Olsberg | 276.33 mi (444.70 km) |
| Herisau to Oranienburg | 410.60 mi (660.80 km) |
| Herisau to Ortenberg | 205.60 mi (330.89 km) |
