| Fort Collins to Nasaud | 5,622.59 mi (9,048.68 km) |
| Fort Collins to Navodari | 5,906.30 mi (9,505.27 km) |
| Fort Collins to Negresti-Oas | 5,562.74 mi (8,952.37 km) |
| Fort Collins to Nehoiu | 5,783.74 mi (9,308.03 km) |
| Fort Collins to Ocna Mures | 5,656.80 mi (9,103.75 km) |
| Fort Collins to Odobesti | 5,781.28 mi (9,304.07 km) |
| Fort Collins to Odorheiu Secuiesc | 5,701.65 mi (9,175.92 km) |
| Fort Collins to Oltenita | 5,864.84 mi (9,438.55 km) |
| Fort Collins to Onesti | 5,745.21 mi (9,246.02 km) |
| Fort Collins to Oradea | 5,563.65 mi (8,953.83 km) |
| Fort Collins to Orastie | 5,667.70 mi (9,121.28 km) |
| Fort Collins to Oravita | 5,667.40 mi (9,120.80 km) |
| Fort Collins to Orsova | 5,705.90 mi (9,182.76 km) |
| Fort Collins to Otelu Rosu | 5,661.13 mi (9,110.71 km) |
| Fort Collins to Otopeni | 5,822.56 mi (9,370.50 km) |
