| Letterkenny to Orthez | 851.18 mi (1,369.85 km) |
| Letterkenny to Orvault | 592.67 mi (953.81 km) |
| Letterkenny to Osny | 581.36 mi (935.61 km) |
| Letterkenny to Ostwald | 792.07 mi (1,274.72 km) |
| Letterkenny to Ouistreham | 503.51 mi (810.32 km) |
| Letterkenny to Oullins | 841.87 mi (1,354.85 km) |
| Letterkenny to Outreau | 486.70 mi (783.26 km) |
| Letterkenny to Oyonnax | 837.17 mi (1,347.30 km) |
| Letterkenny to Ozoir-la-Ferriere | 614.55 mi (989.03 km) |
| Letterkenny to Pace | 534.89 mi (860.82 km) |
| Letterkenny to Palaiseau | 604.75 mi (973.25 km) |
| Letterkenny to Pamiers | 918.96 mi (1,478.93 km) |
| Letterkenny to Panazol | 743.68 mi (1,196.84 km) |
| Letterkenny to Pantin | 599.99 mi (965.60 km) |
| Letterkenny to Paray-le-Monial | 781.35 mi (1,257.46 km) |
