| Amarillo to Oerlinghausen | 5,104.38 mi (8,214.71 km) |
| Amarillo to Oestrich-Winkel | 5,163.39 mi (8,309.67 km) |
| Amarillo to Offenburg | 5,225.21 mi (8,409.17 km) |
| Amarillo to Oftersheim | 5,210.57 mi (8,385.61 km) |
| Amarillo to Ohrdruf | 5,222.99 mi (8,405.60 km) |
| Amarillo to Ohringen | 5,250.34 mi (8,449.60 km) |
| Amarillo to Olbernhau | 5,317.57 mi (8,557.80 km) |
| Amarillo to Olching | 5,358.20 mi (8,623.18 km) |
| Amarillo to Oldenburg | 5,040.35 mi (8,111.66 km) |
| Amarillo to Oldenburg in Holstein | 5,078.59 mi (8,173.19 km) |
| Amarillo to Olfen | 5,070.84 mi (8,160.72 km) |
| Amarillo to Olpe | 5,115.26 mi (8,232.21 km) |
| Amarillo to Olsberg | 5,123.87 mi (8,246.08 km) |
| Amarillo to Oranienburg | 5,220.97 mi (8,402.33 km) |
| Amarillo to Ortenberg | 5,185.48 mi (8,345.23 km) |
