| Horn Lake to Nyon | 4,790.75 mi (7,709.96 km) |
| Horn Lake to Oberriet | 4,894.18 mi (7,876.42 km) |
| Horn Lake to Obersiggenthal | 4,836.94 mi (7,784.31 km) |
| Horn Lake to Oberwil | 4,806.24 mi (7,734.90 km) |
| Horn Lake to Oberwingert | 4,855.07 mi (7,813.48 km) |
| Horn Lake to Oftringen | 4,827.70 mi (7,769.44 km) |
| Horn Lake to Olten | 4,825.87 mi (7,766.49 km) |
| Horn Lake to Onex | 4,792.00 mi (7,711.98 km) |
| Horn Lake to Opfikon | 4,849.88 mi (7,805.13 km) |
| Horn Lake to Ostermundigen | 4,822.86 mi (7,761.65 km) |
| Horn Lake to Payerne | 4,804.85 mi (7,732.66 km) |
| Horn Lake to Pfaffikon | 4,860.94 mi (7,822.93 km) |
| Horn Lake to Plan-les-Ouates | 4,793.26 mi (7,714.00 km) |
| Horn Lake to Pratteln | 4,812.01 mi (7,744.19 km) |
| Horn Lake to Prilly | 4,800.82 mi (7,726.18 km) |
