| Round Lake Beach to Nyon | 4,372.16 mi (7,036.31 km) |
| Round Lake Beach to Oberriet | 4,463.84 mi (7,183.85 km) |
| Round Lake Beach to Obersiggenthal | 4,408.47 mi (7,094.75 km) |
| Round Lake Beach to Oberwil | 4,379.18 mi (7,047.61 km) |
| Round Lake Beach to Oberwingert | 4,425.46 mi (7,122.08 km) |
| Round Lake Beach to Oftringen | 4,400.85 mi (7,082.48 km) |
| Round Lake Beach to Olten | 4,398.89 mi (7,079.32 km) |
| Round Lake Beach to Onex | 4,374.73 mi (7,040.45 km) |
| Round Lake Beach to Opfikon | 4,421.09 mi (7,115.06 km) |
| Round Lake Beach to Ostermundigen | 4,398.68 mi (7,079.00 km) |
| Round Lake Beach to Payerne | 4,382.56 mi (7,053.04 km) |
| Round Lake Beach to Pfaffikon | 4,432.01 mi (7,132.64 km) |
| Round Lake Beach to Plan-les-Ouates | 4,376.04 mi (7,042.55 km) |
| Round Lake Beach to Pratteln | 4,384.63 mi (7,056.39 km) |
| Round Lake Beach to Prilly | 4,380.67 mi (7,050.01 km) |
