| Mettmann to Oschersleben | 191.14 mi (307.62 km) |
| Mettmann to Osnabruck | 85.10 mi (136.96 km) |
| Mettmann to Ostbevern | 66.27 mi (106.65 km) |
| Mettmann to Osterburg | 229.90 mi (369.99 km) |
| Mettmann to Ostercappeln | 93.30 mi (150.15 km) |
| Mettmann to Osterhofen | 321.31 mi (517.10 km) |
| Mettmann to Osterholz-Scharmbeck | 156.46 mi (251.80 km) |
| Mettmann to Osternienburg | 220.34 mi (354.61 km) |
| Mettmann to Osterode | 145.15 mi (233.60 km) |
| Mettmann to Osterwieck | 168.33 mi (270.91 km) |
| Mettmann to Ostfildern | 201.28 mi (323.93 km) |
| Mettmann to Osthofen | 122.23 mi (196.71 km) |
| Mettmann to Ostrhauderfehn | 131.88 mi (212.24 km) |
| Mettmann to Ostringen | 160.07 mi (257.61 km) |
| Mettmann to Oststeinbek | 208.10 mi (334.91 km) |
