| Grinon to Castle Rock (Colorado) | 5,024.79 mi (8,086.62 km) |
| Grinon to Castro Valley (California) | 5,784.69 mi (9,309.55 km) |
| Grinon to Catalina Foothills (Arizona) | 5,598.30 mi (9,009.60 km) |
| Grinon to Cataño (Puerto Rico) | 3,955.41 mi (6,365.62 km) |
| Grinon to Cathedral City (California) | 5,759.61 mi (9,269.19 km) |
| Grinon to Catonsville (Maryland) | 3,756.51 mi (6,045.52 km) |
| Grinon to Cave Spring (Virginia) | 3,978.57 mi (6,402.90 km) |
| Grinon to Cayce (South Carolina) | 4,141.15 mi (6,664.53 km) |
| Grinon to Cayey (Puerto Rico) | 3,969.69 mi (6,388.60 km) |
| Grinon to Cedar City (Utah) | 5,439.41 mi (8,753.89 km) |
| Grinon to Cedar Falls (Iowa) | 4,370.18 mi (7,033.12 km) |
| Grinon to Cedar Hill (Texas) | 4,958.98 mi (7,980.71 km) |
| Grinon to Cedar Lake (Indiana) | 4,187.85 mi (6,739.70 km) |
| Grinon to Cedar Mill (Oregon) | 5,413.59 mi (8,712.34 km) |
| Grinon to Cedar Park (Texas) | 5,085.58 mi (8,184.45 km) |
