| Amarillo to Nuth | 5,050.86 mi (8,128.58 km) |
| Amarillo to Oegstgeest | 4,950.87 mi (7,967.65 km) |
| Amarillo to Oirschot | 5,006.97 mi (8,057.94 km) |
| Amarillo to Oisterwijk | 5,000.15 mi (8,046.97 km) |
| Amarillo to Oldebroek | 4,990.12 mi (8,030.83 km) |
| Amarillo to Oldenzaal | 5,030.93 mi (8,096.51 km) |
| Amarillo to Ommen | 5,005.19 mi (8,055.08 km) |
| Amarillo to Oosterend | 4,973.79 mi (8,004.54 km) |
| Amarillo to Oosterhout | 4,985.71 mi (8,023.72 km) |
| Amarillo to Oosterwolde | 4,981.96 mi (8,017.69 km) |
| Amarillo to Oostzaan | 4,955.64 mi (7,975.33 km) |
| Amarillo to Opmeer | 4,947.51 mi (7,962.26 km) |
| Amarillo to Oss | 5,004.00 mi (8,053.15 km) |
| Amarillo to Oud-Beijerland | 4,962.80 mi (7,986.85 km) |
| Amarillo to Oudenbosch | 4,976.06 mi (8,008.19 km) |
