| Willimantic to Cocentaina | 3,677.89 mi (5,918.99 km) |
| Willimantic to Coin | 3,536.17 mi (5,690.92 km) |
| Willimantic to Colindres | 3,398.15 mi (5,468.79 km) |
| Willimantic to Collado-Villalba | 3,449.99 mi (5,552.21 km) |
| Willimantic to Colmenar Viejo | 3,460.74 mi (5,569.53 km) |
| Willimantic to Colmenarejo | 3,451.70 mi (5,554.98 km) |
| Willimantic to Conil de la Frontera | 3,483.44 mi (5,606.05 km) |
| Willimantic to Consuegra | 3,504.13 mi (5,639.36 km) |
| Willimantic to Corbera de Llobregat | 3,704.62 mi (5,962.01 km) |
| Willimantic to Cordoba | 3,496.11 mi (5,626.44 km) |
| Willimantic to Coria del Rio | 3,452.86 mi (5,556.85 km) |
| Willimantic to Crevillente | 3,676.30 mi (5,916.43 km) |
| Willimantic to Cuarte de Huerva | 3,567.36 mi (5,741.11 km) |
| Willimantic to Cubellas | 3,699.16 mi (5,953.22 km) |
| Willimantic to Cuellar | 3,413.34 mi (5,493.24 km) |
