| Herenthout to Oestrich-Winkel | 162.59 mi (261.66 km) |
| Herenthout to Offenburg | 233.00 mi (374.97 km) |
| Herenthout to Oftersheim | 208.66 mi (335.80 km) |
| Herenthout to Ohrdruf | 260.36 mi (419.00 km) |
| Herenthout to Ohringen | 248.97 mi (400.68 km) |
| Herenthout to Olbernhau | 374.50 mi (602.70 km) |
| Herenthout to Olching | 356.60 mi (573.89 km) |
| Herenthout to Oldenburg | 200.81 mi (323.17 km) |
| Herenthout to Oldenburg in Holstein | 335.77 mi (540.37 km) |
| Herenthout to Olfen | 119.31 mi (192.01 km) |
| Herenthout to Olpe | 133.41 mi (214.70 km) |
| Herenthout to Olsberg | 161.31 mi (259.60 km) |
| Herenthout to Oranienburg | 377.08 mi (606.85 km) |
| Herenthout to Ortenberg | 195.30 mi (314.31 km) |
| Herenthout to Oschatz | 360.85 mi (580.74 km) |
