| Flower Mound to Oerlinghausen | 5,058.15 mi (8,140.31 km) |
| Flower Mound to Oestrich-Winkel | 5,106.92 mi (8,218.80 km) |
| Flower Mound to Offenburg | 5,161.74 mi (8,307.02 km) |
| Flower Mound to Oftersheim | 5,152.48 mi (8,292.12 km) |
| Flower Mound to Ohrdruf | 5,175.81 mi (8,329.66 km) |
| Flower Mound to Ohringen | 5,193.39 mi (8,357.96 km) |
| Flower Mound to Olbernhau | 5,275.17 mi (8,489.57 km) |
| Flower Mound to Olching | 5,300.80 mi (8,530.81 km) |
| Flower Mound to Oldenburg | 4,998.65 mi (8,044.54 km) |
| Flower Mound to Oldenburg in Holstein | 5,047.24 mi (8,122.75 km) |
| Flower Mound to Olfen | 5,020.97 mi (8,080.47 km) |
| Flower Mound to Olpe | 5,063.07 mi (8,148.22 km) |
| Flower Mound to Olsberg | 5,074.48 mi (8,166.58 km) |
| Flower Mound to Oranienburg | 5,187.41 mi (8,348.33 km) |
| Flower Mound to Ortenberg | 5,132.76 mi (8,260.37 km) |
