| Ashtabula to Olivares | 3,854.95 mi (6,203.94 km) |
| Ashtabula to Olivenza | 3,767.01 mi (6,062.42 km) |
| Ashtabula to Olot | 4,087.01 mi (6,577.40 km) |
| Ashtabula to Onate | 3,840.60 mi (6,180.84 km) |
| Ashtabula to Onda | 4,041.37 mi (6,503.96 km) |
| Ashtabula to Onteniente | 4,065.91 mi (6,543.45 km) |
| Ashtabula to Orihuela | 4,076.47 mi (6,560.45 km) |
| Ashtabula to Osuna | 3,911.25 mi (6,294.55 km) |
| Ashtabula to Ourense | 3,615.67 mi (5,818.85 km) |
| Ashtabula to Oviedo | 3,676.49 mi (5,916.75 km) |
| Ashtabula to Paiporta | 4,053.14 mi (6,522.89 km) |
| Ashtabula to Pajara | 3,787.44 mi (6,095.30 km) |
| Ashtabula to Palafolls | 4,116.68 mi (6,625.15 km) |
| Ashtabula to Palafrugell | 4,126.08 mi (6,640.29 km) |
| Ashtabula to Palamos | 4,127.12 mi (6,641.96 km) |
