| Gnarrenburg to Oestrich-Winkel | 237.90 mi (382.86 km) |
| Gnarrenburg to Offenburg | 343.10 mi (552.16 km) |
| Gnarrenburg to Oftersheim | 278.05 mi (447.49 km) |
| Gnarrenburg to Ohrdruf | 191.35 mi (307.95 km) |
| Gnarrenburg to Ohringen | 290.04 mi (466.77 km) |
| Gnarrenburg to Olbernhau | 262.91 mi (423.12 km) |
| Gnarrenburg to Olching | 372.24 mi (599.07 km) |
| Gnarrenburg to Oldenburg | 36.74 mi (59.12 km) |
| Gnarrenburg to Oldenburg in Holstein | 99.23 mi (159.69 km) |
| Gnarrenburg to Olfen | 133.97 mi (215.61 km) |
| Gnarrenburg to Olpe | 171.08 mi (275.32 km) |
| Gnarrenburg to Olsberg | 142.41 mi (229.19 km) |
| Gnarrenburg to Oranienburg | 181.00 mi (291.29 km) |
| Gnarrenburg to Ortenberg | 209.41 mi (337.01 km) |
| Gnarrenburg to Oschatz | 225.23 mi (362.48 km) |
