| Cities | Distance |
|---|---|
| Giessen to Oria | 819.42 mi (1,318.74 km) |
| Giessen to Oristano | 737.75 mi (1,187.30 km) |
| Giessen to Orta Nova | 722.54 mi (1,162.82 km) |
| Giessen to Orte | 588.24 mi (946.69 km) |
| Giessen to Ortona | 630.45 mi (1,014.61 km) |
| Giessen to Orvieto | 567.27 mi (912.93 km) |
| Giessen to Orzinuovi | 362.87 mi (583.99 km) |
| Giessen to Osimo | 540.18 mi (869.33 km) |
| Giessen to Ospitaletto | 353.40 mi (568.74 km) |
| Giessen to Ostuni | 804.05 mi (1,294.00 km) |
| Giessen to Ottaviano | 728.03 mi (1,171.65 km) |
| Giessen to Ovada | 410.70 mi (660.96 km) |
| Giessen to Ozieri | 691.01 mi (1,112.08 km) |
| Giessen to Paceco | 891.19 mi (1,434.23 km) |
| Giessen to Pachino | 1,009.67 mi (1,624.91 km) |