Circuito de senderismo de 109.37 km desde Etropolska Planina. El desnivel positivo es de 7529 m, con una altitud entre 472 m y 1814 m. Duración estimada: 54 h 20 min. Municipio de salida: Etropolska Planina (Софийска, Bulgarie).
Esta ruta incluye 12 subidas significativas. Con un desnivel acumulado de 5155 m a lo largo de 74.97 km, con una pendiente media del 6.9%.
- Climb 1 (at km 15.06 km): +1051 m over 9.46 km, average slope 11.1%
- Climb 2 (at km 26.47 km): +151 m over 2.68 km, average slope 5.6%
- Climb 3 (at km 36.58 km): +71 m over 1.01 km, average slope 7.0%
- Climb 4 (at km 77.49 km): +168 m over 5.66 km, average slope 3.0%
- Climb 5 (at km 98.97 km): +838 m over 12.76 km, average slope 6.6%
- Climb 6 (at km 103.53 km): +251 m over 1.10 km, average slope 22.7%
- Climb 7 (at km 129.52 km): +1361 m over 22.00 km, average slope 6.2%
- Climb 8 (at km 140.61 km): +123 m over 1.07 km, average slope 11.4%
- Climb 9 (at km 148.29 km): +221 m over 3.33 km, average slope 6.6%
- Climb 10 (at km 162.15 km): +268 m over 5.52 km, average slope 4.9%
- Climb 11 (at km 212.03 km): +468 m over 8.61 km, average slope 5.4%
- Climb 12 (at km 259.71 km): +184 m over 1.77 km, average slope 10.4%
