| Norristown to Orthez | 3,714.75 mi (5,978.31 km) |
| Norristown to Orvault | 3,576.79 mi (5,756.29 km) |
| Norristown to Osny | 3,690.32 mi (5,939.00 km) |
| Norristown to Ostwald | 3,940.18 mi (6,341.11 km) |
| Norristown to Ouistreham | 3,586.96 mi (5,772.65 km) |
| Norristown to Oullins | 3,900.24 mi (6,276.83 km) |
| Norristown to Outreau | 3,630.22 mi (5,842.28 km) |
| Norristown to Oyonnax | 3,920.98 mi (6,310.20 km) |
| Norristown to Ozoir-la-Ferriere | 3,723.58 mi (5,992.53 km) |
| Norristown to Pace | 3,549.00 mi (5,711.57 km) |
| Norristown to Palaiseau | 3,706.90 mi (5,965.68 km) |
| Norristown to Pamiers | 3,834.30 mi (6,170.71 km) |
| Norristown to Panazol | 3,743.15 mi (6,024.02 km) |
| Norristown to Pantin | 3,708.78 mi (5,968.70 km) |
| Norristown to Paray-le-Monial | 3,848.88 mi (6,194.17 km) |
