To register Amazean Jungle Thailand by UTMB in 100 Miles, 100K and 50K distance, runners must have a valid UTMB Index, according to UTMB’s registration regulations.
A valid UTMB Index is achieved by completing at least one race of the UTMB World Series or a UTMB Index race in the relevant category within the previous 24 months.
How to check your UTMB Index
Go to https://utmb.world/utmb-world-series/runners/utmb-Index
fill your name to search and click to view UTMB Index
Create utmb.world account Go to https://bit.ly/3MbXSC7, fill your email and create account. You will see your own UTMB Index on the Profile page.
Search for a UTMB index races at https://utmb.world/index-races
Please submit authentic document, random checking will be applied.
Take a screenshot showing your UTMB Index or certificate to upload into the application system.