| Port Neches to Nyon | 5,193.04 mi (8,357.39 km) |
| Port Neches to Oberriet | 5,299.34 mi (8,528.47 km) |
| Port Neches to Obersiggenthal | 5,241.72 mi (8,435.73 km) |
| Port Neches to Oberwil | 5,210.70 mi (8,385.82 km) |
| Port Neches to Oberwingert | 5,260.10 mi (8,465.32 km) |
| Port Neches to Oftringen | 5,232.09 mi (8,420.24 km) |
| Port Neches to Olten | 5,230.30 mi (8,417.35 km) |
| Port Neches to Onex | 5,193.93 mi (8,358.82 km) |
| Port Neches to Opfikon | 5,254.72 mi (8,456.65 km) |
| Port Neches to Ostermundigen | 5,226.58 mi (8,411.37 km) |
| Port Neches to Payerne | 5,208.11 mi (8,381.64 km) |
| Port Neches to Pfaffikon | 5,265.80 mi (8,474.49 km) |
| Port Neches to Plan-les-Ouates | 5,195.17 mi (8,360.83 km) |
| Port Neches to Pratteln | 5,216.55 mi (8,395.22 km) |
| Port Neches to Prilly | 5,203.52 mi (8,374.25 km) |
