01
Climb.
Head setter Randy, a USAC Level 4 Routesetter, and the Mosaic setting team create fresh problems every week, with beginner-friendly white tags and projects for experienced climbers.
Berkeley's independent bouldering gym on Telegraph
Berkeley's climbing community.
Climb. Study. Hang out. A welcoming third place for beginners, students, faculty, staff, locals, and experienced climbers.
Your third place
More than a gym.
Home is home. Campus is campus. Mosaic is where your day continues.
02
Study.
Bring your laptop, settle into the community table, and make Mosaic part of your day.
03
Hang out.
Meet climbing partners, stay after your session, relax on the patio, and become a familiar face.
Inside Mosaic
See the space before you climb.
High walls, natural light, a patio, study space, and the Telegraph energy that makes Mosaic feel different from a typical gym.
Why Berkeley climbs here
Easy to start. Hard to leave.
Friendly people.
Come solo or with friends. Mosaic is built for conversation between climbs.
New climbs weekly.
Head setter Randy and the setting team keep the walls fresh with new problems every week.
One block from UC Berkeley.
Walk over between classes, after studying, or when you need a reset.
Coalition gym access.
Qualifying members get two free monthly visits to each of seven Northern California partner gyms.
The Mosaic Cup
Berkeley's team climbing challenge.
Build a team of 3–6 climbers and compete in a four-week Mosaic Cup season. Each week features 9 Cup Boulders across Beginner, Intermediate, and Advanced levels.
Climbers earn 1 point for each Cup Boulder sent at their ability level or above, up to 4 points per week. Team score is based on average points per registered climber, so larger teams do not get an automatic advantage.
Top teams win prizes, and the Team Send Award recognizes the team with the most total Cup Boulders sent during the season.
Learn About the Mosaic CupCommunity first
Come for the climbing. Stay for the people.
Students, graduate students, faculty, staff, locals, first-timers, and regulars share the same walls, the same patio, and the same weekly rhythm.
See the community →
Google reviews
Loved by Berkeley climbers.
4.7 stars from 64 Google reviews.
Tim
“It is a smaller gym but still had a great time, doesn’t get too crowded, loved all the sets.”
Alok Thakrar
“High quality sets, and good staff support and community.”
Google reviewers
Climbers consistently highlight the route quality, helpful staff, community atmosphere, and easy Telegraph location.
Start climbing
Simple ways to begin.
First visit
$17
Try Mosaic once. Rental shoes are included with your first visit pass.
Buy First Visit Pass See all passes- Beginner friendly
- No partner required
- Start with white tags
Best first step
$99
First two months for new members. Make Mosaic part of your week.
Become a Member See all memberships- Unlimited climbing
- Bring one first-time Mosaic visitor free every visit
- Two free visits monthly to each of seven partner gyms
- 30% off retail
Membership includes
Everything in your membership.
Unlimited climbing.
Climb as often as you want with no day passes or visit limits.
Bring a guest free, every visit.
One first-time Mosaic visitor climbs free each time you come in.
Up to 14 partner gym visits a month.
Two free visits monthly to each of seven Coalition gyms across Northern California.
30% off retail.
Save on shoes, chalk, and gear at the Mosaic front desk.
$25 referral credit.
Earn $25 store credit when a friend you refer becomes a member.
Partner gyms
Your membership goes beyond Berkeley.
Qualifying Mosaic members receive two free visits each month to each Coalition partner gym.
When you arrive at a partner gym, tell the front desk you're a Mosaic member, share your name, and show your member QR code.
First Visit Guide
Everything you need before you walk in.
Buy your pass, sign your waiver, learn how bouldering works, and start with beginner-friendly white tags.
Open First Visit Guide
Visit us
One block from UC Berkeley.
2369 Telegraph Ave, Berkeley
Cross street: Durant.
Climb before class, after studying, or between lectures. Grab boba, hand-pulled ramen, or a beer at Raleigh's before or after your session.
Parking Garage: 2450 Durant Ave. First hour free, then $1/hour for hours 1–3.
Summer Hours12–10
Monday–Friday12 PM–10 PM
July 4Closed
Questionsstaff@mosaicboulders.com
August 31 – September 4, 2026
Mosaic Week
Five nights. DJ, prizes, food, drinks, gear giveaways, discounts, and the biggest climbing week on Telegraph. Every night has something different — and Friday closes it out with a full community party. New to Berkeley? This is where your year starts.
Mon, Aug 31New Student Night — 6 PM · $10 entry with free rentals for freshmen, transfers, and first-year grad students
Tue, Sep 1Gear Giveaway Night — 6 PM · free chalk bags, discounted apparel, and used gear while supplies last
Wed, Sep 2Cal Climbing Night — 6 PM · $10 entry with free rentals for Cal Climbing members, or bring a guest free with a Mosaic membership
Thu, Sep 3New Student Night — 6 PM · $10 entry with free rentals for freshmen, transfers, and first-year grad students
Fri, Sep 4Mosaic Week Party — 6 PM · DJ, food, drinks, prizes, and the biggest night of the fall
Upcoming events
Big nights on Telegraph.
Climbing, music, creative energy, and community nights throughout the school year.
Mosaic Week Party
The closing night of Mosaic Week. DJ, food, drinks, prizes, and the biggest community night of the fall.
First Friday: Women's Climb Night
Starts at 6 PM. $10 entry and free rentals for anyone self-categorizing as part of the community. Tabling and collaboration with Berkeley women's organizations.
Dynoween
Costumes, dyno challenges, Halloween climbing, and prizes throughout the evening.
First Friday: LGBTQ+ Climb Night
Starts at 6 PM. $10 entry and free rentals for anyone self-categorizing as part of the community. Tabling and collaboration with Berkeley LGBTQ+ organizations.
Berkeley Pulse Creative + Climb Party
An evening celebrating Berkeley creativity with climbing, local artists, music, and community.
First Friday: International Student Climb Night
Starts at 6 PM. $10 entry and free rentals for anyone self-categorizing as part of the community. Tabling and collaboration with Berkeley international student organizations. Free entry if you are not going home for the holidays.
First Friday: People of Color (POC) Climb Night
Starts at 6 PM. $10 entry and free rentals for anyone self-categorizing as part of the community. Tabling and collaboration with Berkeley student organizations.
Telegraph Turn Up Returns V4
Friday through Monday: four days of fresh climbs, community events, competitions, and Telegraph District energy.
First Friday: Graduate Student Climb Night
Starts at 6 PM. $10 entry and free rentals for anyone self-categorizing as part of the community. Tabling and collaboration with Berkeley graduate student organizations. Free entry if you are defending your dissertation this year.
First Friday: Faculty & Staff Climb Night
Starts at 6 PM. $10 entry and free rentals for anyone self-categorizing as part of the community. Tabling and collaboration with Berkeley faculty and staff groups. Nobel Prize winners receive complimentary valet parking, 4 guest passes, and free entry. (We have never had to honor this.)
End of Year Party
Graduating students get a free guest pass. Food, drinks, and DJ on the patio — plus a special staff celebration honoring team members who are graduating.
Ready?
Start climbing today.
Try Mosaic for $17 with rentals included, or start two months of unlimited climbing for $99.