| Glen Allen to Oerlinghausen | 4,081.09 mi (6,567.89 km) |
| Glen Allen to Oestrich-Winkel | 4,108.18 mi (6,611.48 km) |
| Glen Allen to Offenburg | 4,148.54 mi (6,676.42 km) |
| Glen Allen to Oftersheim | 4,149.73 mi (6,678.35 km) |
| Glen Allen to Ohrdruf | 4,194.40 mi (6,750.24 km) |
| Glen Allen to Ohringen | 4,192.14 mi (6,746.60 km) |
| Glen Allen to Olbernhau | 4,301.66 mi (6,922.85 km) |
| Glen Allen to Olching | 4,296.77 mi (6,914.98 km) |
| Glen Allen to Oldenburg | 4,032.41 mi (6,489.54 km) |
| Glen Allen to Oldenburg in Holstein | 4,102.53 mi (6,602.38 km) |
| Glen Allen to Olfen | 4,037.17 mi (6,497.19 km) |
| Glen Allen to Olpe | 4,073.68 mi (6,555.96 km) |
| Glen Allen to Olsberg | 4,090.56 mi (6,583.12 km) |
| Glen Allen to Oranienburg | 4,234.60 mi (6,814.93 km) |
| Glen Allen to Ortenberg | 4,140.95 mi (6,664.22 km) |
