# Yakoruda Ultra: Bike Route B12 Canonical page: https://semkovo.org/routes/b12-yakoruda-ultra/ Updated: 2026-10-19 Publisher: Matthias Zeitler Expert 44.5 km bike ride near Semkovo: Yakoruda Ultra. Directions, a topographic map and elevation profile; 5–10 hours. Starts at Yakoruda central square. [Mountain biking](https://semkovo.org/cycling/) / B12 A long mountain circuit follows the Byala Mesta and Nehtenitsa ridge, with carrying, an obstructed upper connection and a severely eroded final descent. **Time**: 5–10 hours **Difficulty**: Expert **Distance**: 44.5 km **Ascent**: ↑ 1540 m **Start**: Yakoruda central square **Route**: Loop Expert groups prepared for carrying, blocked tracks and severe erosion. **Arrange transfers to and from Yakoruda’s central square.** [Map & elevation profile](https://semkovo.org/routes/b12-yakoruda-ultra/#route-map)[Route directions](https://semkovo.org/routes/b12-yakoruda-ultra/#directions)[Interactive route map](https://semkovo.org/map/?route=B12) ## Route map Follow the line marked B12. Loop. [![T12 / Yakoruda Ultra](https://semkovo.org/maps/T12-960.webp)](https://semkovo.org/maps/T12.webp) T12 / Yakoruda Ultra · The full B12 loop climbs through Nehtenitsa before returning to Yakoruda. [View full map](https://semkovo.org/maps/T12.webp) Map data © OpenStreetMap contributors, Open Database Licence; terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers [Open the selected route on the interactive map](https://semkovo.org/map/?route=B12) ## Elevation profile ![B12 elevation profile](https://semkovo.org/maps/B12.webp) B12 elevation profile · Complete ride · 44.5 km Terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers Distance and ascent above follow the mapped route using terrain-model heights. Elevation: 897–2016 m. Route measurements & alternative starts **44.5 km · 1,210 m ascent · 5–10 hours · advanced adventure terrain, R1/R2/R3/X · KFN7.** Start and finish at **Yakoruda's central square**. Mapped profile: 44.52 km, 1,540 m terrain-model ascent. Original guide estimate: 44.5 km, 1,210 m ascent. These are separately published figures; the profile uses terrain-model heights. Complete ride · 44.5 km. Rounded labels on the original map or profile may differ slightly. The original guide estimates are retained here for comparison; use the full figures for your chosen starting point. ## Route directions **Who it’s for: Expert.** Expert groups prepared for carrying, blocked tracks and severe erosion. The name fits. This route includes carrying, blocked tracks and a severely eroded final descent; its numerical effort grade tells you less than those three facts. Keep it for an experienced group with a confirmed route and access agreement. It is unsuitable as a spontaneous ride chosen over breakfast. **Route outline:** follow the fish-farm turn at **4.1 km** and the **Byala Mesta** valley. The good road ends around **14.7 km**, followed by the **Ropalitsa ascent**. A meadow near **18.3 km** precedes an obstructed old road and a steep, indistinct bypass towards the **Belmeken–Nehtenitsa road**. Continue along the **Nehtenitsa ridge**, through **Treshtenik**, **Kyorovi and Yurcheni Kolibi**, then **Grashkina Mogila** before the difficult descent to Yakoruda. The obstructed upper connection and off-road bypass need explicit confirmation from the park before attempting them. Fallen trees can make carrying unavoidable, and the final erosion can be dangerous even to skilled riders. Turn back if the bypass is unclear or closed. Take a full day's food and generous water; **2 litres is only a starting allowance**, not a ceiling for a long, hot day. ## Before you set off Check weather and access, carry the map offline and leave your route and expected return with someone at Coliving. Match technical terrain to your riding skills. Check access restrictions before setting out. [Mountain preparation](https://semkovo.org/essentials/#mountain-safety-and-insurance)[Find a local guide](https://semkovo.org/providers/#mountain-guides)[Save the full PDF guide](https://semkovo.org/guide/) ## Other rides to consider [Back to all rides](https://semkovo.org/cycling/) [![T11 / The long western rides](https://semkovo.org/maps/T11-960.webp)](https://semkovo.org/routes/b08-yakoruda-treshtenik-semkovo-vodolaza/) Expert · B08 ### [Yakoruda–Treshtenik–Semkovo–Vodolaza](https://semkovo.org/routes/b08-yakoruda-treshtenik-semkovo-vodolaza/) 5–10 hours 47.5 km · ↑ 1680 m · Loop From Yakoruda market parking · transport to the start Expert riders with all-day stamina, T4 skills and carrying capacity. [View route and map](https://semkovo.org/routes/b08-yakoruda-treshtenik-semkovo-vodolaza/) [![T07 / Semkovo–Treshtenik rides](https://semkovo.org/maps/T07-960.webp)](https://semkovo.org/routes/b01-treshtenik-semkovo-below-suhoto-lake/) Expert · B01 ### [Treshtenik–Semkovo, Below Suhoto Lake](https://semkovo.org/routes/b01-treshtenik-semkovo-below-suhoto-lake/) 3–6 hours 32.4 km · ↑ 970 m · Loop From Treshtenik parking · transport to the start Expert riders on T4 singletrack; expect steep rock and possible carrying. [View route and map](https://semkovo.org/routes/b01-treshtenik-semkovo-below-suhoto-lake/) [![T10 / Yakoruda–Treshtenik](https://semkovo.org/maps/T10-960.webp)](https://semkovo.org/routes/b13-yakoruda-treshtenik-2/) Experienced · B13 ### [Yakoruda–Treshtenik 2](https://semkovo.org/routes/b13-yakoruda-treshtenik-2/) 3–6 hours 29.3 km · ↑ 980 m · Loop From Yakoruda market parking · transport to the start Fit regular riders ready for a long climb and remote forest-road descent. [View route and map](https://semkovo.org/routes/b13-yakoruda-treshtenik-2/)