| Trentham to Popovo | 1,455.66 mi (2,342.66 km) |
| Trentham to Provadia | 1,510.80 mi (2,431.40 km) |
| Trentham to Radnevo | 1,488.63 mi (2,395.72 km) |
| Trentham to Radomir | 1,360.91 mi (2,190.17 km) |
| Trentham to Rakitovo | 1,430.35 mi (2,301.93 km) |
| Trentham to Rakovski | 1,451.05 mi (2,335.24 km) |
| Trentham to Razgrad | 1,459.44 mi (2,348.74 km) |
| Trentham to Razlog | 1,411.12 mi (2,270.98 km) |
| Trentham to Ruse | 1,424.92 mi (2,293.19 km) |
| Trentham to Samokov | 1,393.91 mi (2,243.28 km) |
| Trentham to Sandanski | 1,418.64 mi (2,283.07 km) |
| Trentham to Sevlievo | 1,424.74 mi (2,292.89 km) |
| Trentham to Shumen | 1,486.53 mi (2,392.34 km) |
| Trentham to Silistra | 1,465.87 mi (2,359.09 km) |
| Trentham to Sliven | 1,487.86 mi (2,394.49 km) |
