| Northeim to Olivenza | 1,219.85 mi (1,963.16 km) |
| Northeim to Olot | 746.49 mi (1,201.36 km) |
| Northeim to Onate | 832.55 mi (1,339.86 km) |
| Northeim to Onda | 948.00 mi (1,525.66 km) |
| Northeim to Onteniente | 1,026.50 mi (1,651.99 km) |
| Northeim to Orihuela | 1,080.29 mi (1,738.55 km) |
| Northeim to Osuna | 1,241.50 mi (1,998.01 km) |
| Northeim to Ourense | 1,056.93 mi (1,700.96 km) |
| Northeim to Oviedo | 934.17 mi (1,503.41 km) |
| Northeim to Paiporta | 984.58 mi (1,584.53 km) |
| Northeim to Pajara | 2,036.99 mi (3,278.21 km) |
| Northeim to Palafolls | 773.08 mi (1,244.16 km) |
| Northeim to Palafrugell | 748.90 mi (1,205.24 km) |
| Northeim to Palamos | 754.14 mi (1,213.67 km) |
| Northeim to Palencia | 955.73 mi (1,538.10 km) |
