| Key Largo to Sangeorgiu de Mures | 5,629.02 mi (9,059.02 km) |
| Key Largo to Sangeorz-Bai | 5,611.50 mi (9,030.84 km) |
| Key Largo to Sannicolau Mare | 5,479.40 mi (8,818.25 km) |
| Key Largo to Santana | 5,509.17 mi (8,866.15 km) |
| Key Largo to Satu Mare | 5,524.03 mi (8,890.07 km) |
| Key Largo to Scobinti | 5,703.64 mi (9,179.13 km) |
| Key Largo to Scornicesti | 5,696.64 mi (9,167.85 km) |
| Key Largo to Sebes | 5,609.85 mi (9,028.17 km) |
| Key Largo to Seini | 5,541.74 mi (8,918.58 km) |
| Key Largo to Sfantu-Gheorghe | 5,707.10 mi (9,184.68 km) |
| Key Largo to Sibiu | 5,640.01 mi (9,076.72 km) |
| Key Largo to Sighetu Marmatiei | 5,561.17 mi (8,949.84 km) |
| Key Largo to Sighisoara | 5,653.45 mi (9,098.35 km) |
| Key Largo to Simeria | 5,589.33 mi (8,995.15 km) |
| Key Largo to Sinaia | 5,714.13 mi (9,196.00 km) |
