| Tomball to Popovo | 6,170.14 mi (9,929.89 km) |
| Tomball to Provadia | 6,222.09 mi (10,013.49 km) |
| Tomball to Radnevo | 6,208.06 mi (9,990.90 km) |
| Tomball to Radomir | 6,082.67 mi (9,789.11 km) |
| Tomball to Rakitovo | 6,152.10 mi (9,900.85 km) |
| Tomball to Rakovski | 6,171.94 mi (9,932.78 km) |
| Tomball to Razgrad | 6,171.97 mi (9,932.83 km) |
| Tomball to Razlog | 6,132.75 mi (9,869.70 km) |
| Tomball to Ruse | 6,137.73 mi (9,877.72 km) |
| Tomball to Samokov | 6,115.66 mi (9,842.20 km) |
| Tomball to Sandanski | 6,139.78 mi (9,881.02 km) |
| Tomball to Sevlievo | 6,143.52 mi (9,887.03 km) |
| Tomball to Shumen | 6,199.05 mi (9,976.40 km) |
| Tomball to Silistra | 6,171.44 mi (9,931.98 km) |
| Tomball to Sliven | 6,205.11 mi (9,986.16 km) |
