| Merzig to Olivenza | 1,005.30 mi (1,617.87 km) |
| Merzig to Olot | 539.85 mi (868.81 km) |
| Merzig to Onate | 617.95 mi (994.50 km) |
| Merzig to Onda | 736.73 mi (1,185.66 km) |
| Merzig to Onteniente | 816.11 mi (1,313.40 km) |
| Merzig to Orihuela | 870.12 mi (1,400.33 km) |
| Merzig to Osuna | 1,026.51 mi (1,652.01 km) |
| Merzig to Ourense | 850.00 mi (1,367.94 km) |
| Merzig to Oviedo | 726.22 mi (1,168.74 km) |
| Merzig to Paiporta | 773.75 mi (1,245.23 km) |
| Merzig to Pajara | 1,821.86 mi (2,931.99 km) |
| Merzig to Palafolls | 569.00 mi (915.73 km) |
| Merzig to Palafrugell | 546.34 mi (879.25 km) |
| Merzig to Palamos | 551.59 mi (887.69 km) |
| Merzig to Palencia | 742.14 mi (1,194.36 km) |
