| Mason City to Rochefort | 4,274.08 mi (6,878.47 km) |
| Mason City to Rodez | 4,478.11 mi (7,206.82 km) |
| Mason City to Rognac | 4,619.32 mi (7,434.08 km) |
| Mason City to Roissy-en-Brie | 4,301.60 mi (6,922.75 km) |
| Mason City to Romainville | 4,289.81 mi (6,903.79 km) |
| Mason City to Romans-sur-Isere | 4,546.01 mi (7,316.10 km) |
| Mason City to Rombas | 4,409.62 mi (7,096.61 km) |
| Mason City to Romilly-sur-Seine | 4,352.61 mi (7,004.85 km) |
| Mason City to Ronchin | 4,246.38 mi (6,833.89 km) |
| Mason City to Roncq | 4,241.76 mi (6,826.45 km) |
| Mason City to Roquebrune-sur-Argens | 4,676.29 mi (7,525.76 km) |
| Mason City to Roquevaire | 4,639.91 mi (7,467.22 km) |
| Mason City to Rosny-sous-Bois | 4,292.30 mi (6,907.79 km) |
| Mason City to Roubaix | 4,246.45 mi (6,834.00 km) |
| Mason City to Rouen | 4,217.80 mi (6,787.90 km) |
