Epic Bouldering

it’s not just about the climb — it’s about the vibe

Our gym isn’t just a place to climb — it’s a community, a challenge, and an adventure rolled into one rad package. Welcoming in a new era of indoor climbing. Intentional setting. Real movement and long sessions, shared beta, and projects that keep you coming back.
our walls are designed to push your limits and elevate your skills.

crafting problems that are as dynamic as they are engaging

With our weekly rotating selection of bouldering routes, you’ll never get bored. Plus, our crew of passionate climbers is always here to help you level up.

A man standing on an orange ladder installing yellow holds on an indoor climbing wall.

Indoor bouldering gym with a black wall, featuring colorful climbing holds, and several people climbing or watching. There is a person in black climbing on large pink and white holds, while others observe or prepare to climb. The floor is padded for safety, and indoor plants are near the reception area.

How we grade
our Boulders

At Boulder Union, we amp up the experience with our “RIC Scale.”
It’s how we keep our climbs fresh and diverse. We’re not just about INTENSITY —our routes mix in RISK (think tricky moves, not danger) and COMPLEXITY (nailing those sequences)
to keep you on your toes.

we serve up challenges that are as
unique as they are fun. And don’t sweat it — we’ve always got those classic, gritty New England test pieces
sprinkled throughout the gym.