| Groveton to Orbetello | 4,417.25 mi (7,108.88 km) |
| Groveton to Oria | 4,770.31 mi (7,677.08 km) |
| Groveton to Oristano | 4,385.66 mi (7,058.04 km) |
| Groveton to Orta Nova | 4,654.90 mi (7,491.34 km) |
| Groveton to Orte | 4,468.29 mi (7,191.03 km) |
| Groveton to Ortona | 4,560.36 mi (7,339.20 km) |
| Groveton to Orvieto | 4,447.19 mi (7,157.07 km) |
| Groveton to Orzinuovi | 4,262.86 mi (6,860.41 km) |
| Groveton to Osimo | 4,480.29 mi (7,210.33 km) |
| Groveton to Ospitaletto | 4,263.85 mi (6,862.01 km) |
| Groveton to Ostuni | 4,759.20 mi (7,659.19 km) |
| Groveton to Ottaviano | 4,618.28 mi (7,432.40 km) |
| Groveton to Ovada | 4,231.59 mi (6,810.09 km) |
| Groveton to Ozieri | 4,381.37 mi (7,051.13 km) |
| Groveton to Paceco | 4,636.36 mi (7,461.50 km) |
