| Round Lake to Butzbach | 4,309.21 mi (6,935.00 km) |
| Round Lake to Buxtehude | 4,229.46 mi (6,806.66 km) |
| Round Lake to Cadolzburg | 4,428.60 mi (7,127.14 km) |
| Round Lake to Calbe | 4,362.51 mi (7,020.78 km) |
| Round Lake to Calw | 4,379.05 mi (7,047.40 km) |
| Round Lake to Castrop-Rauxel | 4,218.01 mi (6,788.23 km) |
| Round Lake to Celle | 4,275.23 mi (6,880.33 km) |
| Round Lake to Cham | 4,502.85 mi (7,246.63 km) |
| Round Lake to Chemnitz | 4,445.70 mi (7,154.66 km) |
| Round Lake to Clausthal-Zellerfeld | 4,315.97 mi (6,945.88 km) |
| Round Lake to Cloppenburg | 4,195.64 mi (6,752.24 km) |
| Round Lake to Coburg | 4,399.36 mi (7,080.09 km) |
| Round Lake to Coesfeld | 4,197.70 mi (6,755.55 km) |
| Round Lake to Cologne | 4,227.74 mi (6,803.89 km) |
| Round Lake to Coswig | 4,456.65 mi (7,172.28 km) |
