| Kallithea to Nottingham | 1,574.70 mi (2,534.24 km) |
| Kallithea to Nuneaton | 1,571.07 mi (2,528.40 km) |
| Kallithea to Oadby | 1,559.48 mi (2,509.74 km) |
| Kallithea to Oakengates | 1,612.86 mi (2,595.65 km) |
| Kallithea to Oakham | 1,549.69 mi (2,493.99 km) |
| Kallithea to Oldbury | 1,590.53 mi (2,559.72 km) |
| Kallithea to Oldham | 1,630.01 mi (2,623.25 km) |
| Kallithea to Ollerton | 1,579.02 mi (2,541.18 km) |
| Kallithea to Olton | 1,580.55 mi (2,543.64 km) |
| Kallithea to Omagh | 1,848.91 mi (2,975.54 km) |
| Kallithea to Ormesby | 1,635.43 mi (2,631.97 km) |
| Kallithea to Ormskirk | 1,658.06 mi (2,668.38 km) |
| Kallithea to Orpington | 1,473.73 mi (2,371.73 km) |
| Kallithea to Ossett | 1,616.12 mi (2,600.89 km) |
| Kallithea to Oswaldtwistle | 1,646.76 mi (2,650.20 km) |
