| Armthorpe to Oerlinghausen | 420.28 mi (676.37 km) |
| Armthorpe to Oestrich-Winkel | 457.17 mi (735.75 km) |
| Armthorpe to Offenburg | 523.97 mi (843.24 km) |
| Armthorpe to Oftersheim | 504.26 mi (811.53 km) |
| Armthorpe to Ohrdruf | 532.39 mi (856.79 km) |
| Armthorpe to Ohringen | 544.05 mi (875.57 km) |
| Armthorpe to Olbernhau | 640.60 mi (1,030.95 km) |
| Armthorpe to Olching | 651.88 mi (1,049.10 km) |
| Armthorpe to Oldenburg | 382.94 mi (616.29 km) |
| Armthorpe to Oldenburg in Holstein | 487.96 mi (785.29 km) |
| Armthorpe to Olfen | 375.16 mi (603.77 km) |
| Armthorpe to Olpe | 413.61 mi (665.64 km) |
| Armthorpe to Olsberg | 428.63 mi (689.82 km) |
| Armthorpe to Oranienburg | 593.61 mi (955.32 km) |
| Armthorpe to Ortenberg | 482.69 mi (776.81 km) |
