| Schwalmstadt to Oerlinghausen | 75.23 mi (121.06 km) |
| Schwalmstadt to Oestrich-Winkel | 83.79 mi (134.85 km) |
| Schwalmstadt to Offenburg | 179.81 mi (289.38 km) |
| Schwalmstadt to Oftersheim | 111.54 mi (179.50 km) |
| Schwalmstadt to Ohrdruf | 66.49 mi (107.00 km) |
| Schwalmstadt to Ohringen | 120.42 mi (193.79 km) |
| Schwalmstadt to Olbernhau | 180.69 mi (290.78 km) |
| Schwalmstadt to Olching | 210.98 mi (339.54 km) |
| Schwalmstadt to Oldenburg | 158.57 mi (255.19 km) |
| Schwalmstadt to Oldenburg in Holstein | 242.88 mi (390.87 km) |
| Schwalmstadt to Olfen | 95.89 mi (154.32 km) |
| Schwalmstadt to Olpe | 60.46 mi (97.30 km) |
| Schwalmstadt to Olsberg | 42.89 mi (69.03 km) |
| Schwalmstadt to Oranienburg | 212.74 mi (342.38 km) |
| Schwalmstadt to Ortenberg | 40.52 mi (65.22 km) |
