| Round Rock to Kanjiza | 5,870.17 mi (9,447.12 km) |
| Round Rock to Kikinda | 5,895.25 mi (9,487.49 km) |
| Round Rock to Kladovo | 6,030.20 mi (9,704.67 km) |
| Round Rock to Knic | 5,991.15 mi (9,641.82 km) |
| Round Rock to Knjazevac | 6,074.62 mi (9,776.16 km) |
| Round Rock to Koceljeva | 5,932.02 mi (9,546.66 km) |
| Round Rock to Kosjeric | 5,957.10 mi (9,587.02 km) |
| Round Rock to Kovacica | 5,933.90 mi (9,549.69 km) |
| Round Rock to Kovin | 5,962.99 mi (9,596.50 km) |
| Round Rock to Kragujevac | 5,995.15 mi (9,648.27 km) |
| Round Rock to Kraljevo | 5,998.72 mi (9,654.00 km) |
| Round Rock to Krupanj | 5,919.94 mi (9,527.22 km) |
| Round Rock to Krusevac | 6,029.25 mi (9,703.13 km) |
| Round Rock to Kucevo | 6,001.06 mi (9,657.78 km) |
| Round Rock to Kula | 5,871.76 mi (9,449.68 km) |
