| Carrollton to Orbetello | 5,522.11 mi (8,886.97 km) |
| Carrollton to Oria | 5,866.48 mi (9,441.19 km) |
| Carrollton to Oristano | 5,512.21 mi (8,871.04 km) |
| Carrollton to Orta Nova | 5,752.50 mi (9,257.76 km) |
| Carrollton to Orte | 5,569.48 mi (8,963.22 km) |
| Carrollton to Ortona | 5,655.88 mi (9,102.26 km) |
| Carrollton to Orvieto | 5,547.60 mi (8,928.00 km) |
| Carrollton to Orzinuovi | 5,351.93 mi (8,613.09 km) |
| Carrollton to Osimo | 5,571.40 mi (8,966.31 km) |
| Carrollton to Ospitaletto | 5,351.40 mi (8,612.24 km) |
| Carrollton to Ostuni | 5,854.12 mi (9,421.29 km) |
| Carrollton to Ottaviano | 5,722.80 mi (9,209.96 km) |
| Carrollton to Ovada | 5,329.68 mi (8,577.30 km) |
| Carrollton to Ozieri | 5,503.22 mi (8,856.57 km) |
| Carrollton to Paceco | 5,762.33 mi (9,273.58 km) |
