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!

7th Edition (ITRA Race) 

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

BECOME #ULTRAMALAIVASI

Search
Close this search box.

7th Edition (ITRA Race) 

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

BECOME #ULTRAMALAIVASI

Search
Close this search box.
  • Bison Ultra runners must book accommodation at the Last Shola Cottages or the Heavens Ledge Campsite. 
  • Limited accommodation slots are available, and they will be allotted on a first-come-first basis.  Additional charges may apply to access the venue if you decide to stay elsewhere (or after the accommodation quota is exceeded).  The Heavens Ledge/Last Shola management decide this.
  • The estate owners decide the accommodation + food or the entry fee, and the Bison Ultra organizing crew or anyone from KaysFIT Academy does not interfere in the registration process. 
  • All runners must comply with the resort rules, booking terms, and conditions.
  • Accommodation bookings will start from 4-Oct-2023.
  • Visit the accommodation page to learn more.

Bison Ultra History

About Bison ULtra

Bison Ultra is an Ultramarathon organized by KaysFIT Academy, founded by Kannan Sundararajan, a.k.a Coach Kay, also the Race Director.

400kaysfit

Bison Ultra is a tough trail running event, with steep up/down gradients, for regular amateur runners to serious ultramarathon lovers. With two distance categories, 50k & 25k, Bison Ultra offers an opportunity for everyone to experience this beautiful ultramarathon.

The challenging Bison ULtra route is designed to take you through scenic private coffee plantations, green wooded forests, and innocent village roads.

Bison Ultra is for everyone

For the long hauling & fast ultrarunners(100%)
For those seasoned ultrathrill seekers & for the first timers fell in love with ultramarathons(100%)
for the half marathoners seeking an ultratryst(100%)
For those willing to become an #ultramalaivasi(100%)

Distance categories

50k

The most challenging race category with perfectly suited for someone who can crack a full marathon < 5:50 hrs

25k

For the regular half marathon runners planning to start ultramarathons, experience ultra-difficult terrain. Sub 3 hrs half marathon mandatory for qualification. Still, a challenging course with 1053m elevation gain and 889 m drop

Why should you run the Bison Ultra?

Bison ULtra provides an opportunity for runners across the world to come and experience many unique things such as,

  • Designed for everyone, especially the first time trail runners
  • A beautiful souvenir T-Shirt
  • become the #ULTRAmalaivasi (the Ultra Mountain dweller, Malaivasi – மலைவாசி in Tamil)
  • supported by dedicated volunteers, a passionate organizing team & sponsoring partners to provide a “WOW” experience to runners
  • focuses on the safety of the runners as a topmost priority. Only experienced runners are allowed to enter the 90k, 60k & 30k under strict qualification guidelines, first-aid & CPR trained volunteers, medical team support with AED kit, bike marshals, and HAM volunteers.