| South Houston to Nyon | 5,262.38 mi (8,468.99 km) |
| South Houston to Oberriet | 5,367.27 mi (8,637.79 km) |
| South Houston to Obersiggenthal | 5,309.86 mi (8,545.39 km) |
| South Houston to Oberwil | 5,279.01 mi (8,495.75 km) |
| South Houston to Oberwingert | 5,328.10 mi (8,574.75 km) |
| South Houston to Oftringen | 5,300.44 mi (8,530.23 km) |
| South Houston to Olten | 5,298.62 mi (8,527.31 km) |
| South Houston to Onex | 5,263.43 mi (8,470.68 km) |
| South Houston to Opfikon | 5,322.82 mi (8,566.26 km) |
| South Houston to Ostermundigen | 5,295.26 mi (8,521.91 km) |
| South Houston to Payerne | 5,277.02 mi (8,492.54 km) |
| South Houston to Pfaffikon | 5,333.90 mi (8,584.08 km) |
| South Houston to Plan-les-Ouates | 5,264.68 mi (8,472.69 km) |
| South Houston to Pratteln | 5,284.81 mi (8,505.09 km) |
| South Houston to Prilly | 5,272.68 mi (8,485.56 km) |
