| Riihimaki to Orangevale (California) | 5,303.81 mi (8,535.66 km) |
| Riihimaki to Orchards (Washington) | 4,858.30 mi (7,818.67 km) |
| Riihimaki to Orcutt (California) | 5,544.51 mi (8,923.02 km) |
| Riihimaki to Oregon (Ohio) | 4,300.71 mi (6,921.33 km) |
| Riihimaki to Oregon (Wisconsin) | 4,381.13 mi (7,050.75 km) |
| Riihimaki to Oregon City (Oregon) | 4,882.16 mi (7,857.08 km) |
| Riihimaki to Orem (Utah) | 5,037.50 mi (8,107.07 km) |
| Riihimaki to Orinda (California) | 5,371.80 mi (8,645.07 km) |
| Riihimaki to Orland Park (Illinois) | 4,420.87 mi (7,114.70 km) |
| Riihimaki to Orlando (Florida) | 5,025.67 mi (8,088.03 km) |
| Riihimaki to Ormond Beach (Florida) | 4,969.28 mi (7,997.28 km) |
| Riihimaki to Oro Valley (Arizona) | 5,533.57 mi (8,905.41 km) |
| Riihimaki to Oroville (California) | 5,255.11 mi (8,457.28 km) |
| Riihimaki to Oshkosh (Wisconsin) | 4,294.73 mi (6,911.71 km) |
| Riihimaki to Oskaloosa (Iowa) | 4,560.81 mi (7,339.92 km) |
