| Glen Ellyn to Orthez | 4,214.59 mi (6,782.73 km) |
| Glen Ellyn to Orvault | 4,045.99 mi (6,511.39 km) |
| Glen Ellyn to Osny | 4,131.52 mi (6,649.04 km) |
| Glen Ellyn to Ostwald | 4,367.79 mi (7,029.28 km) |
| Glen Ellyn to Ouistreham | 4,032.98 mi (6,490.46 km) |
| Glen Ellyn to Oullins | 4,362.92 mi (7,021.44 km) |
| Glen Ellyn to Outreau | 4,056.73 mi (6,528.67 km) |
| Glen Ellyn to Oyonnax | 4,376.09 mi (7,042.63 km) |
| Glen Ellyn to Ozoir-la-Ferriere | 4,165.55 mi (6,703.80 km) |
| Glen Ellyn to Pace | 4,010.38 mi (6,454.08 km) |
| Glen Ellyn to Palaiseau | 4,150.82 mi (6,680.10 km) |
| Glen Ellyn to Pamiers | 4,329.47 mi (6,967.61 km) |
| Glen Ellyn to Panazol | 4,216.28 mi (6,785.44 km) |
| Glen Ellyn to Pantin | 4,150.48 mi (6,679.56 km) |
| Glen Ellyn to Paray-le-Monial | 4,307.45 mi (6,932.18 km) |
