BG Ultra Slam – #UltraCube!
Presenting the unique challenge of BG Ultra Slam! Collect all six medals from our races during the 2025-2027 period (inclusive) and combine them into an impressive #UltraCube – a symbol of your endurance and achievements. Complete the most challenging distances to earn gold medals and create a golden #UltraCube. Prefer shorter distances? Gather silver medals and build a silver #UltraCube. Mix the distances to craft your own unique #UltraCube, telling your personal story of triumph and determination!
Find out which races and their dates on the new BG Ultra Slam website here.
100 km, 80 km, 42 km, 21 km, 3 km
Tryavna Ultra is looking for volunteers!
IMPORTANT! Read before you sign up!
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Registration and sign up for all distances.
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Brief Information
Welcome to tryavna-ultra.com!
The site of Tryavna Ultra is launched! Welcome! If you have any questions or just want to say “hello”, drop us a line!
Site Navigation
Use the navigation links in the top menu! We recommend that you start with General information about Tryavna Ultra and terms and conditions for participation .
Accommodation
You can find detailed information about accommodation and special booking prices here.
Curious facts
What is "ultramarathon"?
“Ultramarathon” is a run above – 42,195 kilometers. Most often ultramarathons have distances of 60, 80 or even 100+ kilometers.
The greatest challenges
Did you know…
Perhaps the hardest Ultramarathon in the world is “Badwater” – 217 kilometers in the valley of death, temperatures up to 50 degrees, 36 hours and elevation gain of 5800 meters.
Among the most serious events for runners in the world rank and 250 km for 7 days in the Sahara and 5000 km in 50 days in New York.
iRun.bg
iRun association organizes events in running, cycling and other sports. With a history of over 50 events held so far and build a cohesive sports community, iRun is not just an organization, iRun is a CAUSE.