The aid stations and their locations are shown in the course profile above. During the race, two types of aid stations will be available: liquid and solid. The products offered will vary depending on the type and location of the station. The detailed list of items available at the aid stations will be updated in the coming weeks and published under this section.
Crew access is authorized for the 100M category runners under the following conditions:
1. Authorized Locations
- Crews are permitted only at designated aid stations (Base Nord).
- Assistance is allowed only:
- Upon presentation of an "Assistance" ticket.
- With the approval of the aid station team leader.
2. Assistance Conditions
- Assistance may be provided by only one person using a single 30-litre bag, issued by the organization at check-in.
- Only members of the official event medical team are authorized to provide medical or paramedical care. Assistance from professional teams or individuals (medical, paramedical, or otherwise), even if they are family members, is strictly prohibited.
- Crews may provide food, drinks, and gear only.
3. Pacers
- Pacers are not authorized in any race.
The mandatory gear for this race (100M category) is detailed HERE.
At the race-pack collection, each participant will receive one 30-liter bag. After filling the bag with the items of their choice, labelling it and closing it, runners can drop them off at the start. For logistics reasons, UTMB World Series events only accept the official drop bags that are distributed during the check-In. These bags are reusable, so we ask the runners who have already received one to reuse it each time they take part in a UTMB World Series event. Poles are not allowed in drop bags.
Drop bags will be accessible twice along the race track, both times at the Base Nord Aid Station.
For more information regarding drop bag logistics, consult the full race regulations HERE.
Participants must be at least 18 years of age on the date of the race to enter.
Finishing this race will give you 3 Running Stones. Your Running Stones will be automatically logged in your UTMB account.
Run with purpose and give even more meaning to your adventure.
The Charity Bibs of the Odyssée 100K allow you to take part in the race while supporting one of our two official causes:
How It Works
Step 1 – Choose your cause and start your registration
Go to the “Charity Bibs” section and select the distance of your choice. Complete your initial registration (it will remain incomplete for now—don’t worry, that’s normal).
Step 2 – Make your donation
You’ll receive an automatic email with links to both partner organizations. Choose your cause and make your donation or start a fundraising campaign.
Step 3 – Donation validation
Once your donation has been confirmed by the chosen organization, the Boréalys team will validate the amount and send you a new email with a personalized registration link.
Step 4 – Finalize your registration and payment
Depending on the total amount raised, you’ll be able to complete your registration and pay the remaining balance according to the scale below:
$250 to $749 = Regular price / $750 to $999 = 25% discount / $1,000 and up 50% discount
A minimum donation of $250 is required to obtain a Charity Bib. Deadline: July 24, 2026, or until all 100 Charity Bibs for the Odyssée 100K are sold out.
Step 5 – Confirmation
Once your payment is completed, you’ll receive an official confirmation email—you’re now registered for the race!
Donation Distribution :
75% of the funds raised go directly to the cause you support. 25% go to UTMB Care, a solidarity fund that supports local communities affected by natural disasters.
Tax Receipt
An official tax receipt will be issued by the benefiting organization for all eligible donations.
To register or learn more:
Visit the “Charity Bibs” section on our official website borealys.utmb.world
