May 1, 2027
May 1, 2027 Estimated date
Pilsen Region
Silniční běh
50 km
2.854 km
May 2, 2026
50 km, 2.854 km
Silniční běh
Konstantinovy Lázně, Plzeň, Czech Republic
Registration and pricing
Registration closes: May 2, 2026
all
Late registration 700 Kč až 8 500 Kč May 2, 2026
Estimated date. We have not received an official date for this race.
Race description
The K6 Czech Ultramarathon Festival is a prestigious ultramarathon held in Konstantinovy Lázně on a 2,854-metre loop. The festival includes six races of varying lengths, from 24 hours to a six-day run, attracting ultramarathon runners from many countries. In 2026, the 24-hour race will also be the Czech Republic Championships. The race is known for its difficulty and international participation, making it a significant event in Czech and world ultramarathon running.
Highlights
- A 2,854-metre loop in Konstantinovy Lázně
- The longest race lasts six days
- The 24-hour race is the 2026 Czech Republic Championships
Additional information
The race is held on an asphalt road course. The organiser is Rumning klap z.s. The first category starts at 12:00. The festival includes 50 km, 24-hour, 48-hour, 72-hour and 144-hour races, as well as a six-day run. The races take place on a 2,854-metre loop equipped with lighting and meeting international standards. The event is part of the international ultramarathon calendar and offers various race distances, including 50 km, 24 hours, 48 hours, 72 hours and 6 days.
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