| Calverton to Opole | 4,390.60 mi (7,065.98 km) |
| Calverton to Orzesze | 4,439.72 mi (7,145.03 km) |
| Calverton to Osowa | 4,282.10 mi (6,891.37 km) |
| Calverton to Ostroda | 4,359.64 mi (7,016.16 km) |
| Calverton to Ostroleka | 4,438.68 mi (7,143.37 km) |
| Calverton to Ostrow Mazowiecka | 4,460.17 mi (7,177.95 km) |
| Calverton to Ostrow Wielkopolski | 4,352.30 mi (7,004.35 km) |
| Calverton to Ostrowiec Swietokrzyski | 4,510.50 mi (7,258.95 km) |
| Calverton to Ostrzeszow | 4,364.65 mi (7,024.22 km) |
| Calverton to Oswiecim | 4,461.60 mi (7,180.25 km) |
| Calverton to Otwock | 4,462.35 mi (7,181.45 km) |
| Calverton to Ozarow Mazowiecki | 4,441.87 mi (7,148.51 km) |
| Calverton to Ozimek | 4,400.95 mi (7,082.65 km) |
| Calverton to Ozorkow | 4,395.52 mi (7,073.90 km) |
| Calverton to Pabianice | 4,410.33 mi (7,097.74 km) |
