| Mattoon to Nuth | 4,337.36 mi (6,980.30 km) |
| Mattoon to Oegstgeest | 4,241.44 mi (6,825.94 km) |
| Mattoon to Oirschot | 4,295.44 mi (6,912.85 km) |
| Mattoon to Oisterwijk | 4,288.88 mi (6,902.28 km) |
| Mattoon to Oldebroek | 4,285.48 mi (6,896.82 km) |
| Mattoon to Oldenzaal | 4,327.90 mi (6,965.08 km) |
| Mattoon to Ommen | 4,302.14 mi (6,923.62 km) |
| Mattoon to Oosterend | 4,272.85 mi (6,876.49 km) |
| Mattoon to Oosterhout | 4,274.01 mi (6,878.35 km) |
| Mattoon to Oosterwolde | 4,281.46 mi (6,890.35 km) |
| Mattoon to Oostzaan | 4,248.61 mi (6,837.47 km) |
| Mattoon to Opmeer | 4,242.22 mi (6,827.20 km) |
| Mattoon to Oss | 4,294.48 mi (6,911.31 km) |
| Mattoon to Oud-Beijerland | 4,251.10 mi (6,841.48 km) |
| Mattoon to Oudenbosch | 4,263.32 mi (6,861.15 km) |
