| Round Rock to Prokuplje | 6,054.93 mi (9,744.47 km) |
| Round Rock to Raca | 5,986.92 mi (9,635.01 km) |
| Round Rock to Raska | 6,015.44 mi (9,680.91 km) |
| Round Rock to Razanj | 6,033.87 mi (9,710.58 km) |
| Round Rock to Rekovac | 6,009.12 mi (9,670.74 km) |
| Round Rock to Ruma | 5,909.52 mi (9,510.45 km) |
| Round Rock to Sabac | 5,915.11 mi (9,519.45 km) |
| Round Rock to Secanj | 5,928.03 mi (9,540.25 km) |
| Round Rock to Senta | 5,877.65 mi (9,459.17 km) |
| Round Rock to Sid | 5,881.85 mi (9,465.92 km) |
| Round Rock to Sjenica | 5,992.93 mi (9,644.69 km) |
| Round Rock to Smederevo | 5,965.49 mi (9,600.53 km) |
| Round Rock to Smederevska Palanka | 5,980.03 mi (9,623.93 km) |
| Round Rock to Sokobanja | 6,046.53 mi (9,730.95 km) |
| Round Rock to Sombor | 5,848.19 mi (9,411.76 km) |
