| Boulder to Oschatz | 5,117.64 mi (8,236.05 km) |
| Boulder to Oschersleben | 5,026.30 mi (8,089.04 km) |
| Boulder to Osnabruck | 4,914.62 mi (7,909.31 km) |
| Boulder to Ostbevern | 4,919.47 mi (7,917.12 km) |
| Boulder to Osterburg | 5,004.96 mi (8,054.70 km) |
| Boulder to Ostercappeln | 4,917.28 mi (7,913.60 km) |
| Boulder to Osterhofen | 5,243.50 mi (8,438.60 km) |
| Boulder to Osterholz-Scharmbeck | 4,894.63 mi (7,877.15 km) |
| Boulder to Osternienburg | 5,060.12 mi (8,143.47 km) |
| Boulder to Osterode | 5,009.39 mi (8,061.84 km) |
| Boulder to Osterwieck | 5,012.37 mi (8,066.62 km) |
| Boulder to Ostfildern | 5,119.94 mi (8,239.74 km) |
| Boulder to Osthofen | 5,043.55 mi (8,116.81 km) |
| Boulder to Ostrhauderfehn | 4,862.74 mi (7,825.83 km) |
| Boulder to Ostringen | 5,079.10 mi (8,174.02 km) |
