| Rockford to Norwich | 3,999.36 mi (6,436.35 km) |
| Rockford to Nottingham | 3,898.84 mi (6,274.58 km) |
| Rockford to Nuneaton | 3,900.74 mi (6,277.63 km) |
| Rockford to Oadby | 3,912.90 mi (6,297.21 km) |
| Rockford to Oakengates | 3,858.61 mi (6,209.84 km) |
| Rockford to Oakham | 3,923.32 mi (6,313.97 km) |
| Rockford to Oldbury | 3,880.84 mi (6,245.61 km) |
| Rockford to Oldham | 3,844.70 mi (6,187.45 km) |
| Rockford to Ollerton | 3,895.79 mi (6,269.67 km) |
| Rockford to Olton | 3,890.83 mi (6,261.69 km) |
| Rockford to Omagh | 3,623.94 mi (5,832.16 km) |
| Rockford to Ormesby | 3,847.75 mi (6,192.35 km) |
| Rockford to Ormskirk | 3,815.68 mi (6,140.74 km) |
| Rockford to Orpington | 3,997.09 mi (6,432.70 km) |
| Rockford to Ossett | 3,860.19 mi (6,212.37 km) |
