| Keller to Butzbach | 5,124.67 mi (8,247.35 km) |
| Keller to Buxtehude | 5,047.55 mi (8,123.25 km) |
| Keller to Cadolzburg | 5,244.04 mi (8,439.46 km) |
| Keller to Calbe | 5,180.26 mi (8,336.82 km) |
| Keller to Calw | 5,192.37 mi (8,356.32 km) |
| Keller to Castrop-Rauxel | 5,034.07 mi (8,101.55 km) |
| Keller to Celle | 5,092.99 mi (8,196.37 km) |
| Keller to Cham | 5,318.90 mi (8,559.94 km) |
| Keller to Chemnitz | 5,263.12 mi (8,470.17 km) |
| Keller to Clausthal-Zellerfeld | 5,133.28 mi (8,261.22 km) |
| Keller to Cloppenburg | 5,013.05 mi (8,067.72 km) |
| Keller to Coburg | 5,215.66 mi (8,393.79 km) |
| Keller to Coesfeld | 5,014.10 mi (8,069.41 km) |
| Keller to Cologne | 5,042.97 mi (8,115.88 km) |
| Keller to Coswig | 5,274.41 mi (8,488.35 km) |
