The 7th edition of Bison Ultra 2025 will be held on Sunday, June 8th, 2025. It will feature 60k, 45k, 35k, and 18k distance categories with ITRA points! The REGISTRATION IS OPEN NOW. First 50 runners to receive early bird discount of 10%

7th Edition (ITRA Race) 

Bison Ultra | 8 Jun, 2025 | SUN
60k | 45k | 35k | 18k

BECOME #ULTRAMALAIVASI

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7th Edition (ITRA Race) 

Bison Ultra | 8 Jun, 2025 | SUN
60k | 45k | 35k | 18k

BECOME #ULTRAMALAIVASI

Search
Close this search box.

The Bison Ultra route for all distances categories is measured using standard GPS watches and not accurate distances. Visit the individual run category pages listed below to know more about the accuracy of the route.

NOTE: With these distance inaccuracies in mind, we have carefully chosen the cut-off time to help most runners achieve their finish goals 50k and 25k categories. Runners are requested not to rely on their GPS markers but to follow the kilometre sign boards kept at an interval of 2 kilometres throughout the course

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