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.

ENTRY CONDITIONS

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
18-20	No	No	No	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)

REGISTRATION TRANSFER

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

CANCELLATION OF A REGISTRATION

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 wishes to cancel their registration for the reasons described below :

• 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: 500 baht per race (Approx. 15€)

Cancellation insurance must be taken out at the time of registration.

b) Refund without insurance

Date of cancellation	% refund
Until the end of June	60%
Until the end of August	50%
Until the end of October	30%
After October	No refund

c) Exceptional conditions in case of event cancellation:

If a race is cancelled or if the event needs to be organized differently (e.g. one or more races need to be cancelled), for any reason beyond the control of Sport Authority of Thailand or UTMB® International, more than 30 days before the start, runners will be partially refunded the entry fees.

The amount of the refund will be decided as to allow the organization to deal with the irremediable expenses incurred as of the date of the cancellation. Runners will be refunded as follows:

Date of cancellation	% refund
Until the end of June	60%
Until the end of August	50%
Until the end of October	30%
After October	No refund

If a race is cancelled less than 60 days before the start or if a race in progress is interrupted fees will not be refunded.