| Zagarolo to Olivenza | 1,070.73 mi (1,723.18 km) |
| Zagarolo to Olot | 531.30 mi (855.04 km) |
| Zagarolo to Onate | 780.99 mi (1,256.89 km) |
| Zagarolo to Onda | 695.40 mi (1,119.13 km) |
| Zagarolo to Onteniente | 736.99 mi (1,186.08 km) |
| Zagarolo to Orihuela | 773.31 mi (1,244.52 km) |
| Zagarolo to Osuna | 1,004.86 mi (1,617.16 km) |
| Zagarolo to Ourense | 1,059.23 mi (1,704.66 km) |
| Zagarolo to Oviedo | 953.83 mi (1,535.04 km) |
| Zagarolo to Paiporta | 713.67 mi (1,148.54 km) |
| Zagarolo to Pajara | 1,773.53 mi (2,854.22 km) |
| Zagarolo to Palafolls | 519.55 mi (836.14 km) |
| Zagarolo to Palafrugell | 497.27 mi (800.28 km) |
| Zagarolo to Palamos | 499.27 mi (803.50 km) |
| Zagarolo to Palencia | 891.32 mi (1,434.44 km) |
