| Illescas to Oberriet | 831.89 mi (1,338.80 km) |
| Illescas to Obersiggenthal | 788.91 mi (1,269.63 km) |
| Illescas to Oberwil | 762.46 mi (1,227.06 km) |
| Illescas to Oberwingert | 808.30 mi (1,300.83 km) |
| Illescas to Oftringen | 767.79 mi (1,235.65 km) |
| Illescas to Olten | 768.52 mi (1,236.82 km) |
| Illescas to Onex | 652.13 mi (1,049.50 km) |
| Illescas to Opfikon | 797.24 mi (1,283.04 km) |
| Illescas to Ostermundigen | 736.87 mi (1,185.87 km) |
| Illescas to Payerne | 710.04 mi (1,142.70 km) |
| Illescas to Pfaffikon | 803.00 mi (1,292.30 km) |
| Illescas to Plan-les-Ouates | 652.09 mi (1,049.44 km) |
| Illescas to Pratteln | 767.96 mi (1,235.92 km) |
| Illescas to Prilly | 685.68 mi (1,103.49 km) |
| Illescas to Pully | 687.55 mi (1,106.50 km) |
