| McCalla to Norwich | 4,365.31 mi (7,025.28 km) |
| McCalla to Nottingham | 4,261.65 mi (6,858.46 km) |
| McCalla to Nuneaton | 4,258.60 mi (6,853.56 km) |
| McCalla to Oadby | 4,272.48 mi (6,875.90 km) |
| McCalla to Oakengates | 4,215.72 mi (6,784.54 km) |
| McCalla to Oakham | 4,284.46 mi (6,895.17 km) |
| McCalla to Oldbury | 4,237.16 mi (6,819.05 km) |
| McCalla to Oldham | 4,210.90 mi (6,776.78 km) |
| McCalla to Ollerton | 4,261.29 mi (6,857.88 km) |
| McCalla to Olton | 4,247.02 mi (6,834.92 km) |
| McCalla to Omagh | 3,989.50 mi (6,420.48 km) |
| McCalla to Ormesby | 4,225.76 mi (6,800.70 km) |
| McCalla to Ormskirk | 4,180.29 mi (6,727.53 km) |
| McCalla to Orpington | 4,348.05 mi (6,997.51 km) |
| McCalla to Ossett | 4,228.96 mi (6,805.85 km) |
