Pacing, fueling and crew sheet for the course you pick
4’99216’378 m D+ ft D+
At a glance
K3 ULTRA GOLD BORDER RACE 2026 took place on Saturday 26 September 2026 in Zlatograd (Smolyan, Bulgaria). 5 courses from 13.6 to 101 km.
Longest course: GBR100, 101 km with 4’992 m D+ (49 m per km: mountain terrain).
The 2027 edition takes place on Friday 24 September 2027. On Kliva, plan your pacing and nutrition for free, then send the plan to your watch.
The first ultramarathon whose routes cover the border part of the Rhodopes in Bulgaria. The event takes place at the end of September. The finish is in Zlatograd. The routes offer breathtaking views…
5 courses
13.6km8.5mi
533 m D+1’749 ft D+
566 m D-1’857 ft D-
avg 4%
GBR1326.09.
No index23km14.3mi
933 m D+3’061 ft D+
909 m D-2’982 ft D-
avg 4%
GBR2326.09.
42km26.1mi
2’196 m D+7’205 ft D+
2’427 m D-7’963 ft D-
avg 5%
GBR4326.09.
62km38.5mi
3’269 m D+10’725 ft D+
3’179 m D-10’430 ft D-
avg 5%
GBR6326.09.
101km62.8mi
4’992 m D+16’378 ft D+
5’018 m D-16’463 ft D-
avg 5%
GBR10026.09.
Course analysis
101 km62.8 mi4’992 m D+16’378 ft D+
- D+
- 4’992 m16’378 ft
- D−
- 5’018 m16’463 ft
- Max alt.
- 1’323 m4’341 ft
- Steepest
- 19%
Segments
Elevation profile: GBR100
429 m – 1’323 m1’407 ft – 4’341 ft
Feels like these
- Paraty Brazil by UTMB101.1 km62.8 mi · 149 km-effortSep 24, 202710’155 km away6’310 mi away
- Chiang Mai Thailand by UTMB®99.6 km61.9 mi · 153 km-effortNov 28, 20267’292 km away4’531 mi away
- Dolomiti Extreme Trail74.3 km46.2 mi · 133 km-effortJun 11, 20271’167 km away725.1 mi away
- Grand Trail de Serre Ponçon93.9 km58.3 mi · 160 km-effortSep 17, 2027 · Dates to be confirmed1’546 km away960.6 mi away
Where to stay
Find a place to stay near Zlatograd for the race.
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