| Holbrook to Nasaud | 4,532.12 mi (7,293.73 km) |
| Holbrook to Navodari | 4,816.38 mi (7,751.21 km) |
| Holbrook to Negresti-Oas | 4,471.49 mi (7,196.17 km) |
| Holbrook to Nehoiu | 4,683.15 mi (7,536.81 km) |
| Holbrook to Ocna Mures | 4,545.78 mi (7,315.72 km) |
| Holbrook to Odobesti | 4,695.89 mi (7,557.31 km) |
| Holbrook to Odorheiu Secuiesc | 4,605.16 mi (7,411.29 km) |
| Holbrook to Oltenita | 4,748.29 mi (7,641.64 km) |
| Holbrook to Onesti | 4,664.26 mi (7,506.40 km) |
| Holbrook to Oradea | 4,443.27 mi (7,150.75 km) |
| Holbrook to Orastie | 4,540.81 mi (7,307.72 km) |
| Holbrook to Oravita | 4,511.37 mi (7,260.35 km) |
| Holbrook to Orsova | 4,552.39 mi (7,326.36 km) |
| Holbrook to Otelu Rosu | 4,519.85 mi (7,273.99 km) |
| Holbrook to Otopeni | 4,706.72 mi (7,574.74 km) |
