| North Richland Hills to Opole | 5,447.92 mi (8,767.58 km) |
| North Richland Hills to Orzesze | 5,498.38 mi (8,848.79 km) |
| North Richland Hills to Osowa | 5,301.65 mi (8,532.19 km) |
| North Richland Hills to Ostroda | 5,380.42 mi (8,658.94 km) |
| North Richland Hills to Ostroleka | 5,458.92 mi (8,785.29 km) |
| North Richland Hills to Ostrow Mazowiecka | 5,481.53 mi (8,821.67 km) |
| North Richland Hills to Ostrow Wielkopolski | 5,401.19 mi (8,692.37 km) |
| North Richland Hills to Ostrowiec Swietokrzyski | 5,551.29 mi (8,933.94 km) |
| North Richland Hills to Ostrzeszow | 5,415.21 mi (8,714.94 km) |
| North Richland Hills to Oswiecim | 5,519.35 mi (8,882.54 km) |
| North Richland Hills to Otwock | 5,492.86 mi (8,839.90 km) |
| North Richland Hills to Ozarow Mazowiecki | 5,473.42 mi (8,808.62 km) |
| North Richland Hills to Ozimek | 5,457.12 mi (8,782.39 km) |
| North Richland Hills to Ozorkow | 5,435.64 mi (8,747.82 km) |
| North Richland Hills to Pabianice | 5,452.98 mi (8,775.73 km) |
