| Chesterfield to Orbetello | 945.83 mi (1,522.16 km) |
| Chesterfield to Oria | 1,251.50 mi (2,014.10 km) |
| Chesterfield to Oristano | 1,034.40 mi (1,664.70 km) |
| Chesterfield to Orta Nova | 1,144.03 mi (1,841.14 km) |
| Chesterfield to Orte | 978.68 mi (1,575.04 km) |
| Chesterfield to Ortona | 1,046.91 mi (1,684.84 km) |
| Chesterfield to Orvieto | 956.02 mi (1,538.57 km) |
| Chesterfield to Orzinuovi | 743.22 mi (1,196.09 km) |
| Chesterfield to Osimo | 956.94 mi (1,540.05 km) |
| Chesterfield to Ospitaletto | 739.27 mi (1,189.74 km) |
| Chesterfield to Ostuni | 1,237.35 mi (1,991.32 km) |
| Chesterfield to Ottaviano | 1,132.01 mi (1,821.80 km) |
| Chesterfield to Ovada | 748.06 mi (1,203.89 km) |
| Chesterfield to Ozieri | 1,000.85 mi (1,610.72 km) |
| Chesterfield to Paceco | 1,246.86 mi (2,006.63 km) |
