| Holly Hill to Orbetello | 4,994.40 mi (8,037.71 km) |
| Holly Hill to Oria | 5,351.86 mi (8,612.98 km) |
| Holly Hill to Oristano | 4,938.79 mi (7,948.22 km) |
| Holly Hill to Orta Nova | 5,236.37 mi (8,427.12 km) |
| Holly Hill to Orte | 5,048.43 mi (8,124.66 km) |
| Holly Hill to Ortona | 5,144.74 mi (8,279.67 km) |
| Holly Hill to Orvieto | 5,028.30 mi (8,092.27 km) |
| Holly Hill to Orzinuovi | 4,856.10 mi (7,815.13 km) |
| Holly Hill to Osimo | 5,069.42 mi (8,158.44 km) |
| Holly Hill to Ospitaletto | 4,858.35 mi (7,818.75 km) |
| Holly Hill to Ostuni | 5,342.00 mi (8,597.12 km) |
| Holly Hill to Ottaviano | 5,193.53 mi (8,358.17 km) |
| Holly Hill to Ovada | 4,817.26 mi (7,752.63 km) |
| Holly Hill to Ozieri | 4,940.40 mi (7,950.80 km) |
| Holly Hill to Paceco | 5,187.33 mi (8,348.20 km) |
