| Oklahoma City to Butzbach | 5,000.54 mi (8,047.59 km) |
| Oklahoma City to Buxtehude | 4,917.04 mi (7,913.21 km) |
| Oklahoma City to Cadolzburg | 5,119.92 mi (8,239.71 km) |
| Oklahoma City to Calbe | 5,050.99 mi (8,128.79 km) |
| Oklahoma City to Calw | 5,071.45 mi (8,161.72 km) |
| Oklahoma City to Castrop-Rauxel | 4,908.89 mi (7,900.09 km) |
| Oklahoma City to Celle | 4,963.73 mi (7,988.35 km) |
| Oklahoma City to Cham | 5,193.66 mi (8,358.39 km) |
| Oklahoma City to Chemnitz | 5,134.81 mi (8,263.68 km) |
| Oklahoma City to Clausthal-Zellerfeld | 5,005.31 mi (8,055.27 km) |
| Oklahoma City to Cloppenburg | 4,884.87 mi (7,861.44 km) |
| Oklahoma City to Coburg | 5,089.97 mi (8,191.51 km) |
| Oklahoma City to Coesfeld | 4,888.27 mi (7,866.91 km) |
| Oklahoma City to Cologne | 4,919.25 mi (7,916.77 km) |
| Oklahoma City to Coswig | 5,145.05 mi (8,280.16 km) |
