100 km races in Bulgaria (Trail)
This page narrows the calendar to 100 km races within the trail race type, which is helpful when both distance and race format shape the right choice. Use it to compare like-for-like options before committing to a race.
All 100 km races in Bulgaria from April 2026 to April 2027
30 May
Smolyan
DECATHLON Thracian Ultra
село Широка лъка, Смолян, България
DECATHLON TRACIA UTRA is mountain running that recreates the spirit of the ancient Thracian lands through the magic of nature and sport. The…
30 May
Smolyan
DECATHLON Thracian Ultra
Shiroka Laka, Smolyan Province, Bulgaria
DECATHLON Thracian Ultra is mountain running that recreates the spirit of the ancient Thracian lands through the magic of nature and sport.…
28 Jun
Sofia City
Витоша 100км
Sofia, Bulgaria
Vitosha 100 km is a mountain ultra marathon held around Vitosha Mountain in 9 stages, passing through picturesque villages and natural landm…
18 Jul
Gabrovo
Трявна ултра
Трявна, Трявна, България
Tryavna Ultra is an ultramarathon race offering challenging distances in the beautiful nature of the Balkan around the town of Tryavna. The…
21 08
Smolyan
DECATHLON Persenk Ultra
Пампорово, Смолян, България
DECATHLON Persenk Ultra is one of the leading trail running races in Bulgaria, held every summer in the heart of the Rhodope Mountains. The…
26 09
Blagoevgrad
K3 Ultra 2026
Zlatograd, Blagoevgrad Province, Bulgaria
K3 ULTRA is one of the largest ultramarathons in Bulgaria, held in the picturesque Rhodope Mountains. The race offers five different routes…
26 09
Smolyan
K3 ULTRA – GOLD BORDER RACE
Zlatograd, Smolyan Province, Bulgaria
K3 ULTRA - GOLD BORDER RACE is the first ultramarathon covering the border area of the Rhodope Mountains in Bulgaria. The race takes place a…
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