| River Falls to Norwich | 4,001.48 mi (6,439.75 km) |
| River Falls to Nottingham | 3,903.42 mi (6,281.94 km) |
| River Falls to Nuneaton | 3,907.80 mi (6,289.00 km) |
| River Falls to Oadby | 3,918.99 mi (6,307.01 km) |
| River Falls to Oakengates | 3,866.43 mi (6,222.42 km) |
| River Falls to Oakham | 3,928.53 mi (6,322.36 km) |
| River Falls to Oldbury | 3,888.86 mi (6,258.51 km) |
| River Falls to Oldham | 3,848.03 mi (6,192.81 km) |
| River Falls to Ollerton | 3,899.03 mi (6,274.88 km) |
| River Falls to Olton | 3,898.82 mi (6,274.55 km) |
| River Falls to Omagh | 3,629.63 mi (5,841.32 km) |
| River Falls to Ormesby | 3,844.95 mi (6,187.85 km) |
| River Falls to Ormskirk | 3,820.07 mi (6,147.80 km) |
| River Falls to Orpington | 4,006.79 mi (6,448.30 km) |
| River Falls to Ossett | 3,862.06 mi (6,215.39 km) |
