| Great Falls to Collegno | 5,046.54 mi (8,121.62 km) |
| Great Falls to Cologno al Serio | 5,082.05 mi (8,178.76 km) |
| Great Falls to Cologno Monzese | 5,072.70 mi (8,163.73 km) |
| Great Falls to Colorno | 5,137.91 mi (8,268.67 km) |
| Great Falls to Comacchio | 5,202.96 mi (8,373.36 km) |
| Great Falls to Comiso | 5,715.72 mi (9,198.57 km) |
| Great Falls to Como | 5,051.61 mi (8,129.78 km) |
| Great Falls to Concordia Sagittaria | 5,161.83 mi (8,307.16 km) |
| Great Falls to Concorezzo | 5,071.04 mi (8,161.05 km) |
| Great Falls to Conegliano | 5,139.60 mi (8,271.38 km) |
| Great Falls to Conselice | 5,203.20 mi (8,373.73 km) |
| Great Falls to Conselve | 5,164.01 mi (8,310.68 km) |
| Great Falls to Conversano | 5,556.49 mi (8,942.30 km) |
| Great Falls to Copertino | 5,623.49 mi (9,050.14 km) |
| Great Falls to Copparo | 5,181.72 mi (8,339.17 km) |
