| Fitchburg to Opole | 4,028.00 mi (6,482.44 km) |
| Fitchburg to Orzesze | 4,077.09 mi (6,561.45 km) |
| Fitchburg to Osowa | 3,920.91 mi (6,310.09 km) |
| Fitchburg to Ostroda | 3,998.31 mi (6,434.66 km) |
| Fitchburg to Ostroleka | 4,077.32 mi (6,561.81 km) |
| Fitchburg to Ostrow Mazowiecka | 4,098.73 mi (6,596.27 km) |
| Fitchburg to Ostrow Wielkopolski | 3,989.87 mi (6,421.08 km) |
| Fitchburg to Ostrowiec Swietokrzyski | 4,148.24 mi (6,675.95 km) |
| Fitchburg to Ostrzeszow | 4,002.18 mi (6,440.89 km) |
| Fitchburg to Oswiecim | 4,098.99 mi (6,596.68 km) |
| Fitchburg to Otwock | 4,100.49 mi (6,599.09 km) |
| Fitchburg to Ozarow Mazowiecki | 4,079.98 mi (6,566.10 km) |
| Fitchburg to Ozimek | 4,038.37 mi (6,499.13 km) |
| Fitchburg to Ozorkow | 4,033.33 mi (6,491.02 km) |
| Fitchburg to Pabianice | 4,048.06 mi (6,514.72 km) |
