| Topeka to Popovo | 5,687.94 mi (9,153.86 km) |
| Topeka to Provadia | 5,736.46 mi (9,231.93 km) |
| Topeka to Radnevo | 5,731.95 mi (9,224.68 km) |
| Topeka to Radomir | 5,616.08 mi (9,038.20 km) |
| Topeka to Rakitovo | 5,684.30 mi (9,147.99 km) |
| Topeka to Rakovski | 5,699.40 mi (9,172.29 km) |
| Topeka to Razgrad | 5,687.92 mi (9,153.82 km) |
| Topeka to Razlog | 5,667.71 mi (9,121.30 km) |
| Topeka to Ruse | 5,654.25 mi (9,099.64 km) |
| Topeka to Samokov | 5,647.98 mi (9,089.54 km) |
| Topeka to Sandanski | 5,677.05 mi (9,136.33 km) |
| Topeka to Sevlievo | 5,666.82 mi (9,119.86 km) |
| Topeka to Shumen | 5,714.70 mi (9,196.93 km) |
| Topeka to Silistra | 5,682.12 mi (9,144.48 km) |
| Topeka to Sliven | 5,725.72 mi (9,214.66 km) |
