| Boise to Oerlinghausen | 5,062.20 mi (8,146.83 km) |
| Boise to Oestrich-Winkel | 5,150.75 mi (8,289.33 km) |
| Boise to Offenburg | 5,232.03 mi (8,420.14 km) |
| Boise to Oftersheim | 5,201.09 mi (8,370.34 km) |
| Boise to Ohrdruf | 5,178.85 mi (8,334.56 km) |
| Boise to Ohringen | 5,235.61 mi (8,425.90 km) |
| Boise to Olbernhau | 5,254.64 mi (8,456.53 km) |
| Boise to Olching | 5,340.51 mi (8,594.72 km) |
| Boise to Oldenburg | 4,986.76 mi (8,025.42 km) |
| Boise to Oldenburg in Holstein | 4,991.23 mi (8,032.61 km) |
| Boise to Olfen | 5,041.41 mi (8,113.37 km) |
| Boise to Olpe | 5,091.24 mi (8,193.56 km) |
| Boise to Olsberg | 5,090.75 mi (8,192.77 km) |
| Boise to Oranienburg | 5,134.54 mi (8,263.24 km) |
| Boise to Ortenberg | 5,160.22 mi (8,304.56 km) |
