| Sumner to Butzbach | 5,084.20 mi (8,182.22 km) |
| Sumner to Buxtehude | 4,930.25 mi (7,934.46 km) |
| Sumner to Cadolzburg | 5,193.62 mi (8,358.33 km) |
| Sumner to Calbe | 5,068.32 mi (8,156.67 km) |
| Sumner to Calw | 5,186.45 mi (8,346.78 km) |
| Sumner to Castrop-Rauxel | 4,987.84 mi (8,027.15 km) |
| Sumner to Celle | 4,988.51 mi (8,028.24 km) |
| Sumner to Cham | 5,248.05 mi (8,445.93 km) |
| Sumner to Chemnitz | 5,156.97 mi (8,299.34 km) |
| Sumner to Clausthal-Zellerfeld | 5,042.39 mi (8,114.94 km) |
| Sumner to Cloppenburg | 4,929.76 mi (7,933.68 km) |
| Sumner to Coburg | 5,147.49 mi (8,284.08 km) |
| Sumner to Coesfeld | 4,961.24 mi (7,984.35 km) |
| Sumner to Cologne | 5,014.55 mi (8,070.13 km) |
| Sumner to Coswig | 5,153.26 mi (8,293.38 km) |
