| Madison to Nuth | 4,200.88 mi (6,760.66 km) |
| Madison to Oegstgeest | 4,102.28 mi (6,601.98 km) |
| Madison to Oirschot | 4,157.66 mi (6,691.11 km) |
| Madison to Oisterwijk | 4,150.93 mi (6,680.27 km) |
| Madison to Oldebroek | 4,143.44 mi (6,668.22 km) |
| Madison to Oldenzaal | 4,184.95 mi (6,735.02 km) |
| Madison to Ommen | 4,159.17 mi (6,693.53 km) |
| Madison to Oosterend | 4,128.59 mi (6,644.33 km) |
| Madison to Oosterhout | 4,136.31 mi (6,656.75 km) |
| Madison to Oosterwolde | 4,136.96 mi (6,657.79 km) |
| Madison to Oostzaan | 4,107.97 mi (6,611.14 km) |
| Madison to Opmeer | 4,100.52 mi (6,599.15 km) |
| Madison to Oss | 4,155.43 mi (6,687.53 km) |
| Madison to Oud-Beijerland | 4,113.38 mi (6,619.84 km) |
| Madison to Oudenbosch | 4,126.27 mi (6,640.59 km) |
