| Guidel to Oria | 1,157.02 mi (1,862.04 km) |
| Guidel to Oristano | 810.14 mi (1,303.79 km) |
| Guidel to Orta Nova | 1,041.53 mi (1,676.19 km) |
| Guidel to Orte | 854.90 mi (1,375.83 km) |
| Guidel to Ortona | 947.55 mi (1,524.93 km) |
| Guidel to Orvieto | 833.76 mi (1,341.80 km) |
| Guidel to Orzinuovi | 657.35 mi (1,057.91 km) |
| Guidel to Osimo | 870.06 mi (1,400.22 km) |
| Guidel to Ospitaletto | 660.30 mi (1,062.65 km) |
| Guidel to Ostuni | 1,146.14 mi (1,844.54 km) |
| Guidel to Ottaviano | 1,005.89 mi (1,618.82 km) |
| Guidel to Ovada | 618.86 mi (995.96 km) |
| Guidel to Ozieri | 792.61 mi (1,275.58 km) |
| Guidel to Paceco | 1,053.87 mi (1,696.04 km) |
| Guidel to Pachino | 1,214.80 mi (1,955.04 km) |
