| Idrija to Camas (Washington) | 5,575.49 mi (8,972.89 km) |
| Idrija to Cambridge (Maryland) | 4,382.47 mi (7,052.91 km) |
| Idrija to Cambridge (Massachusetts) | 4,015.10 mi (6,461.68 km) |
| Idrija to Camden (Arkansas) | 5,300.70 mi (8,530.65 km) |
| Idrija to Camden (New Jersey) | 4,282.18 mi (6,891.50 km) |
| Idrija to Cameron Park (California) | 5,957.10 mi (9,587.03 km) |
| Idrija to Camp Pendleton South (California) | 6,179.39 mi (9,944.76 km) |
| Idrija to Camp Springs (Maryland) | 4,406.59 mi (7,091.72 km) |
| Idrija to Camp Verde (Arizona) | 5,929.52 mi (9,542.65 km) |
| Idrija to Campbell (California) | 6,066.84 mi (9,763.63 km) |
| Idrija to Campbellsville (Kentucky) | 4,818.13 mi (7,754.03 km) |
| Idrija to Campton Hills (Illinois) | 4,719.87 mi (7,595.89 km) |
| Idrija to Canby (Oregon) | 5,601.78 mi (9,015.19 km) |
| Idrija to Candelaria (Puerto Rico) | 4,850.12 mi (7,805.51 km) |
| Idrija to Candler-McAfee (Georgia) | 4,945.52 mi (7,959.05 km) |
