| Fitchburg to Oerlinghausen | 3,630.92 mi (5,843.40 km) |
| Fitchburg to Oestrich-Winkel | 3,660.51 mi (5,891.03 km) |
| Fitchburg to Offenburg | 3,703.12 mi (5,959.60 km) |
| Fitchburg to Oftersheim | 3,702.68 mi (5,958.89 km) |
| Fitchburg to Ohrdruf | 3,744.79 mi (6,026.66 km) |
| Fitchburg to Ohringen | 3,744.94 mi (6,026.90 km) |
| Fitchburg to Olbernhau | 3,851.41 mi (6,198.24 km) |
| Fitchburg to Olching | 3,850.12 mi (6,196.17 km) |
| Fitchburg to Oldenburg | 3,581.27 mi (5,763.50 km) |
| Fitchburg to Oldenburg in Holstein | 3,650.19 mi (5,874.41 km) |
| Fitchburg to Olfen | 3,587.60 mi (5,773.69 km) |
| Fitchburg to Olpe | 3,624.79 mi (5,833.53 km) |
| Fitchburg to Olsberg | 3,641.08 mi (5,859.75 km) |
| Fitchburg to Oranienburg | 3,782.77 mi (6,087.78 km) |
| Fitchburg to Ortenberg | 3,692.44 mi (5,942.40 km) |
