| McHenry to Nuth | 4,196.33 mi (6,753.34 km) |
| McHenry to Oegstgeest | 4,098.65 mi (6,596.13 km) |
| McHenry to Oirschot | 4,153.56 mi (6,684.51 km) |
| McHenry to Oisterwijk | 4,146.88 mi (6,673.76 km) |
| McHenry to Oldebroek | 4,140.87 mi (6,664.08 km) |
| McHenry to Oldenzaal | 4,182.72 mi (6,731.44 km) |
| McHenry to Ommen | 4,156.93 mi (6,689.94 km) |
| McHenry to Oosterend | 4,126.82 mi (6,641.47 km) |
| McHenry to Oosterhout | 4,132.17 mi (6,650.08 km) |
| McHenry to Oosterwolde | 4,135.27 mi (6,655.08 km) |
| McHenry to Oostzaan | 4,104.87 mi (6,606.15 km) |
| McHenry to Opmeer | 4,097.80 mi (6,594.77 km) |
| McHenry to Oss | 4,151.78 mi (6,681.65 km) |
| McHenry to Oud-Beijerland | 4,109.23 mi (6,613.17 km) |
| McHenry to Oudenbosch | 4,121.89 mi (6,633.54 km) |
