| Ionia to Butzbach | 4,167.56 mi (6,707.03 km) |
| Ionia to Buxtehude | 4,092.38 mi (6,586.06 km) |
| Ionia to Cadolzburg | 4,286.92 mi (6,899.14 km) |
| Ionia to Calbe | 4,224.43 mi (6,798.56 km) |
| Ionia to Calw | 4,235.38 mi (6,816.18 km) |
| Ionia to Castrop-Rauxel | 4,077.08 mi (6,561.42 km) |
| Ionia to Celle | 4,137.19 mi (6,658.16 km) |
| Ionia to Cham | 4,361.89 mi (7,019.79 km) |
| Ionia to Chemnitz | 4,306.88 mi (6,931.25 km) |
| Ionia to Clausthal-Zellerfeld | 4,176.96 mi (6,722.17 km) |
| Ionia to Cloppenburg | 4,056.83 mi (6,528.83 km) |
| Ionia to Coburg | 4,258.74 mi (6,853.77 km) |
| Ionia to Coesfeld | 4,057.22 mi (6,529.47 km) |
| Ionia to Cologne | 4,085.84 mi (6,575.53 km) |
| Ionia to Coswig | 4,318.60 mi (6,950.12 km) |
