| Harrisonburg to Nuth | 4,017.92 mi (6,466.22 km) |
| Harrisonburg to Oegstgeest | 3,928.19 mi (6,321.82 km) |
| Harrisonburg to Oirschot | 3,978.94 mi (6,403.49 km) |
| Harrisonburg to Oisterwijk | 3,972.77 mi (6,393.55 km) |
| Harrisonburg to Oldebroek | 3,977.37 mi (6,400.97 km) |
| Harrisonburg to Oldenzaal | 4,021.11 mi (6,471.36 km) |
| Harrisonburg to Ommen | 3,995.68 mi (6,430.42 km) |
| Harrisonburg to Oosterend | 3,969.28 mi (6,387.93 km) |
| Harrisonburg to Oosterhout | 3,957.58 mi (6,369.11 km) |
| Harrisonburg to Oosterwolde | 3,978.28 mi (6,402.42 km) |
| Harrisonburg to Oostzaan | 3,938.14 mi (6,337.83 km) |
| Harrisonburg to Opmeer | 3,933.92 mi (6,331.03 km) |
| Harrisonburg to Oss | 3,980.44 mi (6,405.90 km) |
| Harrisonburg to Oud-Beijerland | 3,934.96 mi (6,332.70 km) |
| Harrisonburg to Oudenbosch | 3,945.76 mi (6,350.08 km) |
