| Niksar to Orthez | 1,930.30 mi (3,106.52 km) |
| Niksar to Orvault | 1,953.73 mi (3,144.23 km) |
| Niksar to Osny | 1,789.55 mi (2,880.00 km) |
| Niksar to Ostwald | 1,530.07 mi (2,462.41 km) |
| Niksar to Ouistreham | 1,895.32 mi (3,050.22 km) |
| Niksar to Oullins | 1,647.59 mi (2,651.54 km) |
| Niksar to Outreau | 1,824.60 mi (2,936.42 km) |
| Niksar to Oyonnax | 1,608.10 mi (2,587.99 km) |
| Niksar to Ozoir-la-Ferriere | 1,759.70 mi (2,831.96 km) |
| Niksar to Pace | 1,960.89 mi (3,155.74 km) |
| Niksar to Palaiseau | 1,778.97 mi (2,862.97 km) |
| Niksar to Pamiers | 1,814.53 mi (2,920.20 km) |
| Niksar to Panazol | 1,816.12 mi (2,922.76 km) |
| Niksar to Pantin | 1,773.11 mi (2,853.55 km) |
| Niksar to Paray-le-Monial | 1,681.85 mi (2,706.68 km) |
