| Duncan to Oschatz | 5,186.62 mi (8,347.05 km) |
| Duncan to Oschersleben | 5,093.20 mi (8,196.71 km) |
| Duncan to Osnabruck | 4,971.21 mi (8,000.39 km) |
| Duncan to Ostbevern | 4,973.34 mi (8,003.81 km) |
| Duncan to Osterburg | 5,079.75 mi (8,175.07 km) |
| Duncan to Ostercappeln | 4,975.10 mi (8,006.65 km) |
| Duncan to Osterhofen | 5,292.86 mi (8,518.04 km) |
| Duncan to Osterholz-Scharmbeck | 4,961.49 mi (7,984.74 km) |
| Duncan to Osternienburg | 5,128.42 mi (8,253.39 km) |
| Duncan to Osterode | 5,070.14 mi (8,159.59 km) |
| Duncan to Osterwieck | 5,076.78 mi (8,170.29 km) |
| Duncan to Ostfildern | 5,153.44 mi (8,293.67 km) |
| Duncan to Osthofen | 5,080.85 mi (8,176.84 km) |
| Duncan to Ostrhauderfehn | 4,924.41 mi (7,925.07 km) |
| Duncan to Ostringen | 5,114.14 mi (8,230.41 km) |
