
Pre-register
The pre-registration period is from November 19 at 7:00 PM to December 8 at 7:00 PM.
All pre-registrations will take place exclusively through the official website.
Important: you may only enter the draw for one of the two races. If you pre-register for the MiM®, you cannot also pre-register for the CSP® and vice versa.
( Steps for registration )
Step 1
Pre-registration
Step 2
Draw
Step 3
Spot confirmation
Step 4
Final registration
( step 1 )Pre-registration
The pre-registration period is from November 19 at 7:00 PM to December 8 at 7:00 PM.
All pre-registrations will take place exclusively through the official website.
Important: you may only enter the draw for one of the two races. If you pre-register for the MiM®, you cannot also pre-register for the CSP® and vice versa.
( step 2 )Draw
If the number of pre-registrations equals or exceeds the available spots by 20%, a draw will be organized to allocate 1,500 spots in the MiM® and 600 spots in the CSP®. If that 20% is not reached, all pre-registrations will be automatically accepted, and the platform will switch to a direct registration system until spots are sold out.
In the event of holding the draw, pre-registrations meeting any of the following requirements will gain direct entry without going through the draw:
● Loyalty: Athletes with at least 50% of the editions completed.
○ For the MiM®: 13 cumulative editions between MiM® and CSP®.
○ For the CSP®: 7 editions completed in the CSP®.
● Qualifying mark: Verified times in either of the 2 previous editions; 2025 or 2026
○ In MiM® time under 07h30' for men and 09h00' for women.
○ In CSP® time under 15h30' for men and 19h30' for women.
● Podium: Athletes who finished in the top three positions in any previous edition.
● Ranking: Athletes with an ITRA or UTMB index higher than 775 points for men and 625 for women.
Note: There is a maximum quota of spots for this category.
● Ecodorsal: Beneficiaries of the Ecodorsal 2026 draw initiative. After the draw, the organization will reserve a quota of spots for: partner clubs, official sponsors, and to ensure international representation.
( step 3 )Spot confirmation
The draw will take place on December 11, 2026. Once concluded, the spot allocation will be available for consultation on the official website, where registration confirmation will be processed. It will also be notified via email, so to ensure receipt of informative communications, it is advisable to check junk or spam mail folders.
( step 4 )Final registration
Winners in the draw and those entitled to direct allocation will have until December 23, 2026 to formalize and pay for their final registration. Spots not completed by that date will pass to the provisional reserve list, contacting the subsequent draw numbers. In the case of the MiM®, priority will be given to those who were rejected in the draws of the two previous editions consecutively and did not have the option of a bib in either race. These new runners will have until December 31, 2026 to finalize their registration.

Charity bibs.
Run for a cause that leaves a mark
In addition to contributing to a worthy cause, you can obtain a guaranteed spot, even when registrations are sold out.
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