| Oak Park to Noventa Vicentina | 4,634.19 mi (7,458.01 km) |
| Oak Park to Novi di Modena | 4,625.77 mi (7,444.45 km) |
| Oak Park to Novi Ligure | 4,547.79 mi (7,318.96 km) |
| Oak Park to Nuoro | 4,753.73 mi (7,650.38 km) |
| Oak Park to Occhiobello | 4,651.15 mi (7,485.31 km) |
| Oak Park to Oderzo | 4,650.34 mi (7,483.99 km) |
| Oak Park to Oggiono | 4,528.66 mi (7,288.17 km) |
| Oak Park to Olbia | 4,735.40 mi (7,620.89 km) |
| Oak Park to Oleggio | 4,507.91 mi (7,254.77 km) |
| Oak Park to Olgiate Comasco | 4,513.65 mi (7,264.02 km) |
| Oak Park to Olgiate Olona | 4,516.41 mi (7,268.45 km) |
| Oak Park to Omegna | 4,487.89 mi (7,222.56 km) |
| Oak Park to Opera | 4,539.60 mi (7,305.77 km) |
| Oak Park to Oppeano | 4,619.91 mi (7,435.03 km) |
| Oak Park to Orbassano | 4,488.05 mi (7,222.82 km) |
