| Riihimaki to Carson (California) | 5,576.80 mi (8,975.00 km) |
| Riihimaki to Carson City (Nevada) | 5,250.46 mi (8,449.79 km) |
| Riihimaki to Carteret (New Jersey) | 4,102.12 mi (6,601.72 km) |
| Riihimaki to Cartersville (Georgia) | 4,784.21 mi (7,699.44 km) |
| Riihimaki to Carthage (Missouri) | 4,856.06 mi (7,815.08 km) |
| Riihimaki to Cary (Illinois) | 4,394.71 mi (7,072.60 km) |
| Riihimaki to Cary (North Carolina) | 4,516.00 mi (7,267.80 km) |
| Riihimaki to Casa de Oro-Mount Helix (California) | 5,625.05 mi (9,052.64 km) |
| Riihimaki to Casa Grande (Arizona) | 5,517.75 mi (8,879.96 km) |
| Riihimaki to Casas Adobes (Arizona) | 5,539.35 mi (8,914.73 km) |
| Riihimaki to Cascades (Virginia) | 4,283.21 mi (6,893.15 km) |
| Riihimaki to Casper (Wyoming) | 4,770.70 mi (7,677.70 km) |
| Riihimaki to Casselberry (Florida) | 5,014.08 mi (8,069.38 km) |
| Riihimaki to Castaic (California) | 5,540.66 mi (8,916.84 km) |
| Riihimaki to Castle Pines (Colorado) | 4,955.33 mi (7,974.83 km) |
