PRO/GRESSION Starts with OB/SESSION
OB/SESSION is a biannual board league that challenges athletes of all ability levels on equitable, complex, and fun Kilter board boulders.
Climb as many competition boulders as you can in April. There is no category breakdown for which can be climbed, the goal is to climb your hardest ten boulders in a field ranked 1-40 by difficulty. We’ll score your top ten climbs. Winners will receive exclusive merch and a free month at Bouldering Project!
Projecting is better with friends – so gather the crew, and start your OB/SESSION.
How to Participate
Sign up for the OB/SESSION Board League in the Kaya mobile app. Use the Challenge function in Kaya to log climbs. The naming convention for each problem is “OB/SESSION 2025 #1 – 40.”
Log ascents in the KAYA app AND upload unedited beta videos of your top ten problems to KAYA or Instagram. Only logged climbs with videos will be counted for final scores.
Categories
Skill Categories
-Beginner: V0-V2
-Intermediate: V3 – V5
-Advanced: V6 – V8
-Open: V8+
Gender Divisions (Open Category only)
-Female
-Male
-Gender Non-Conforming (GNC)
Prizes
1st Place: 1 Month Free Membership + custom OB/SESSION event shirt
2nd Place: 2 Weeks Free Membership + custom OB/SESSION event shirt
3rd Place: Custom OB/SESSION event shirt
Sign up for the OB/SESSION Board League in the Kaya mobile app. Use the Challenge function in Kaya to log climbs.
Log ascents in the KAYA app AND upload unedited beta videos of your top ten problems to KAYA or Instagram. Only logged climbs with videos will be counted for final scores.
Participation is free!
Climb as many boulders as you can in the 4 week time span. There will be no category breakdown for which boulders can be climbed, the goal will be to climb your hardest 10 boulders in a field of boulders ranked 1-40 by difficulty. Competitors will be scored on their top ten climbs.
The climbs are ordered from easiest (1) to hardest (40); participants should climb/attempt as many of the 40 problems as possible during the 4 weeks of the event: April 1st – 31st.
You may climb any of the 40 qualifying problems, regardless of which category you’ve self-selected for, but you will only be ranked against other participants in your category via your top 10 scored boulders.
Scoring will take place using the Challenge function in the KAYA app; the Kaya app allows you to record attempts and tops for each problem. The naming convention for each problem will be “OB/SESSION 2025 #1 – 40”
You do not need to submit a scorecard, only log climbs in KAYA via the OB/SESSION challenge for each gym.
The Kilter Board app should be used to find and light up the problems on the Kilter Board; you may log climbs you do in the Kilter app but the scoring will be done in the Kaya app.
Only climbs logged on Kilter boards at BP locations will count.
You may still participate, but to be ranked and qualify for prizes, you must have videos of your top 10 climbs.
Please contact your local gym via phone, email, or by visiting the front desk: Contact Page