| Onalaska to Castle Pines (Colorado) | 767.35 mi (1,234.93 km) |
| Onalaska to Castle Rock (Colorado) | 769.35 mi (1,238.14 km) |
| Onalaska to Castro Valley (California) | 1,658.75 mi (2,669.50 km) |
| Onalaska to Catalina Foothills (Arizona) | 1,330.34 mi (2,140.98 km) |
| Onalaska to Cataño (Puerto Rico) | 2,280.76 mi (3,670.53 km) |
| Onalaska to Cathedral City (California) | 1,517.52 mi (2,442.21 km) |
| Onalaska to Catonsville (Maryland) | 811.61 mi (1,306.16 km) |
| Onalaska to Cave Spring (Virginia) | 745.59 mi (1,199.92 km) |
| Onalaska to Cayce (South Carolina) | 876.34 mi (1,410.33 km) |
| Onalaska to Cayey (Puerto Rico) | 2,298.55 mi (3,699.16 km) |
| Onalaska to Cedar City (Utah) | 1,218.19 mi (1,960.48 km) |
| Onalaska to Cedar Falls (Iowa) | 113.50 mi (182.66 km) |
| Onalaska to Cedar Hill (Texas) | 840.75 mi (1,353.06 km) |
| Onalaska to Cedar Lake (Indiana) | 258.77 mi (416.45 km) |
| Onalaska to Cedar Mill (Oregon) | 1,545.39 mi (2,487.07 km) |
