Registration
ENTRY RULES
Registration opens on June 20, 2025, at 10:00 AM (GMT+7) on the official website: https://chiangmai.utmb.world . There will be no pre-registration or lottery. For the first 48 hours, priority registration will be given exclusively to valid UTMB Index Holders.
After this 48-hour priority period, registration will open to all runners. Registration will remain open until October 31, 2025, at 10:00 AM (GMT+7), or until all race slots are filled, whichever comes first.
Only applicants who purchase the "Cancellation Guarantee" service will be eligible to request a cancellation. However, the reason for cancellation must align with the specified terms.
Applicants can request to change their race distance (increase/decrease) or transfer their registration to another participant until October 31, 2025. A fee will apply for these changes. It is not possible to defer your entry to next year.
Sales period : Registration will be open to the runners with a valid UTMB index only from 20 June 2025 at 10:00 (GMT +7), until 22 June 2025 at 9:59 (GMT +7).
At the end of this period, registrations will be open to runners with or without valid UTMB index until 31 October 2025 at 10:00 (GMT +7) or until the races are sold out.
There will be no waiting list.
Minimum age : Anyone born in 2005 or before may register to race category 100M, 100K, 50K.
Anyone born in 2007 or before may register to race category 20K.
Age categories :
| 100M Category | 100K Category | 50K Category | 20K Category | |
|---|---|---|---|---|
| 18-19 | - | - | - | yes |
| 20-34 | yes | yes | yes | yes |
| 35-39 | yes | yes | yes | yes |
| 40-44 | yes | yes | yes | yes |
| 45-49 | yes | yes | yes | yes |
| 50-54 | yes | yes | yes | yes |
| 55-59 | yes | yes | yes | yes |
| 60-64 | yes | yes | yes | yes |
| 65-69 | yes | yes | yes | yes |
| 70-74 | yes | yes | yes | yes |
| 75-79 | yes | yes | yes | yes |
| 80-84 | yes | yes | yes | yes |
| 85+ | yes | yes | yes | yes |
Experience : To register to the Chiang Mai Thailand by UTMB®, for safety reasons, runners need to prove their experience. They will be reccommened to have
- 50K: valid UTMB index in the categories 20K or 50K or 100K or 100M
- 100K: valid UTMB index in the categories 50K or 100K or 100M
- 100M: valid UTMB index in the categories 100K or 100M
UTMB® Index is not required for 20K and 10K races
More information about UTMB sport system, race categories and UTMB index, please see (https://utmb.world/sports-system) (https://utmb.world/utmb-index)
Elite Runners : In order to give fair recognition to high level athletes and to ensure a fair management of entry applications, we reserve places for elite athletes according to their Performance Index in the category of the race they chose to compete. Elite runners must register during the registration period. No registration will be accepted after the deadline.
If the distance is lottery based, the elite runners must register at the same time as other athletes.
Once a distance is sold out, the event organizer has the right to refuse an elite registration.
All elites must register to a race at least 60 days before the race.
| Men | Women | ||||||||
| 50K | 100K | 100M | 50K | 100K | 100M | ||||
| Direct and free entry | 850 | 820 | 800 | 710 | 690 | 650 | Or Top3* runners of their countries | ||
| Direct and paid entry Region 2 | 710 | 660 | 580 | 560 | 520 | 450 | |||
Runners meeting the criteria may benefit from the above registration conditions. They shall contact the organizer by filling form at Elite Apply in order to obtain a discount code which can then be entered when registering in the normal way.
The top 3 overall winners and the top 3 Thai overall winners from the 2024 edition will receive complimentary entry to the 2025 race. A unique free entry code will be automatically linked to their registration ID.
You cannot transfer your registration if it's a COMBO application.
a) To another runner :
Registration is personal. However, it is possible to transfer a registration to someone else until 31 October 2025 provided that the runner who will benefit from the registration transfer also meets the entry conditions listed above. The original registration will not be refunded and a 500 Baht transfer fee be charged to the new runner who will have to register at the website www.runningconnect.com
b) To another race of the same event :
To another race of the same event : It is possible to transfer a registration to a shorter distance until 31 October 2025 and in the limit of places available. In this case, no refund will be made.
It is also possible to ask to transfer a registration to a longer distance but the request will not be automatically accepted and will be at the discretion of the race director.
Transfers are only available if the new distance is not sold out.
Cancellations, distance changes, and runner transfers must be requested in the following order :
• Login www.runningconnect.com
• Go to “My Applied Event”
• View detail of your desired order
• Go to “Refund/Transfer”
a) Registration cancellation insurance
The purpose of this cancellation insurance is to allow the runners to be fully reimbursed of the registration fee if they wish to cancel their registration for the reasons :
• Serious illness, serious injury or death of the runner or a member of their family
• Pregnancy of the registered runner
• Public transport failure/flight disruption
• Adverse weather
• Theft of travelling documents
• Armed forces & emergency services recall
• Relocated for work
• Changes to examination dates
Cancellation insurance fees : 10% additional of race fee
Cancellation insurance must be taken out at the time of registration.
b) Refund without insurance :
If the runner does not subscribe to the insurance, no refund will be possible.
Read the entire policy here: https://utmb.world/inclusion
You can contact the organizer to benefit a deferral depending on the conditions listed in the link above.
