| Hartford to Orthez | 3,538.54 mi (5,694.74 km) |
| Hartford to Orvault | 3,398.69 mi (5,469.66 km) |
| Hartford to Osny | 3,511.38 mi (5,651.02 km) |
| Hartford to Ostwald | 3,761.07 mi (6,052.86 km) |
| Hartford to Ouistreham | 3,408.09 mi (5,484.80 km) |
| Hartford to Oullins | 3,722.00 mi (5,989.98 km) |
| Hartford to Outreau | 3,451.07 mi (5,553.96 km) |
| Hartford to Oyonnax | 3,742.47 mi (6,022.92 km) |
| Hartford to Ozoir-la-Ferriere | 3,544.66 mi (5,704.59 km) |
| Hartford to Pace | 3,370.57 mi (5,424.42 km) |
| Hartford to Palaiseau | 3,528.02 mi (5,677.80 km) |
| Hartford to Pamiers | 3,657.82 mi (5,886.70 km) |
| Hartford to Panazol | 3,565.30 mi (5,737.80 km) |
| Hartford to Pantin | 3,529.85 mi (5,680.74 km) |
| Hartford to Paray-le-Monial | 3,670.46 mi (5,907.04 km) |
