What are the opening hours?

Monday 5:15am - 7:30pm Tuesday 5:15am - 7:30pm Wednesday 5:15am - 7:30pm Thursday 5:15am - 7:30pm Friday 5:15am - 6:30pm Saturday 7am - 1pm Sunday 9am - 12pm

CrossFit TILT

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Waltham, MA
CrossFit TILT

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We are the premier gyms of Waltham, Sudbury, Wellesley, Cambridge and Southborough Massachusetts. Come in and experience our classes with our amazing community!

We are the premier CrossFit gyms located in Waltham, Sudbury, Southborough, Wellesley and Cambridge Massachusetts. We are dedicated to improving your life in and outside of the gym.

10/21/2026

Whoa! Check this out!

Join Coach Max Isaak THIS SATURDAY for a TILT Olympic Lifting Seminar!

When: October 24th @ 10am-12pm
Where: TILT Waltham - 40 Jones Road
Who: You and all your best friends

Free! No signup required. Just show up!

Why: Olympic Lifting + Friends + Good Vibes + Immaculate Playlist + Technique Work = What’s not to love?!?!

Come one, come all to an Olympic Lifting Seminar with Max!

Expect to move and groove as we work through all three Olympic lifts: the clean, jerk, and sn**ch. We’ll focus on technique, build to some heavier lifts, and cover accessory work you can use outside of class.

Stick around afterward for some beverages and a little grill and chill!

10/20/2026

Trying a class for the first time can be really intimidating, so let us break it down for you!

This is exactly what you can expect from any class here at CrossFit TILT.

…emphasis on the last slide 😉

10/17/2026

A VERY special day here in Waltham! 🎉

Congratulations to Steven Simmons on hitting 1500 Classes here at CrossFit TILT!

Nothing like celebrating your 1500th Class with 40 people on a Sweaty Saturday Partner WOD!!

Stephen Simmons

10/15/2026

TILT showed UP this past weekend at HYROX America HWPO HYROX Boston! 🔥🔥🔥

(So much so, we’re not even sure everyone is pictured! 🫣)

The only thing that fires us up more than seeing our community show up and push themselves INSIDE the gym every day, is seeing them take all of that incredible fitness to do something OUTSIDE the walls of the gym!

Seeing so many familiar TILT faces out there battling those 8 grueling stations together has us so fired up to see what these guys are going to do next!

After all, what good is all this fitness if we don’t use it to do incredible things in life? 😎💪

Congratulations to EVERYONE who participated! We’re so proud 🤗

achievement

08/24/2026

Upcoming HYROX Classes!

We recently announced our Road to HYROX Boston event happening on Sunday, September 20th at our Cambridge location, TILT at EF! (Signup link in bio!)

As we build towards the event, we’re adding several HYROX Classes throughout September at TILT Waltham and TILT Sudbury. These classes are a great opportunity to get more exposure to the HYROX-style movements, build your engine, and get some extra race-specific training in!

Free September HYROX Pop-Up Classes:

Saturday, Sept. 5 @ 9:00 AM — TILT Waltham
Sunday, Sept. 6 @ 8:15 AM — TILT Sudbury
Saturday, Sept. 12 @ 9:00 AM — TILT Waltham
Saturday, Sept. 12 @ 9:00 AM — TILT Sudbury
Saturday, Sept. 26 @ 9:00 AM — TILT Waltham
Sunday, Sept. 27 @ 8:15 AM — TILT Sudbury
Whether you’re training for a HYROX race or just want to mix up your training and take on a different challenge, everyone is welcome to jump into these classes!

07/28/2026

Thursday’s partner workout!!

Smart pacing, smooth transitions and finish strong on that last round 💪

07/10/2026

Still thinking about this day!

Back in May, the CrossFit community showed up for an unforgettable competition filled with hard work, big energy, and so many moments worth looking back on.

From the athletes on the floor, to the judges, volunteers, coaches, and everyone cheering from the sidelines — thank you for making this event what it was.

This is what TILT is all about: effort, community, and showing up together.

Until next time…

07/05/2026

👏 Consistency pays off!

A huge shoutout to everyone who earned a spot in our June Committed Club by attending 16+ classes this month! Your dedication, hard work, and commitment are what make our community so strong.

We’re also celebrating our members who reached incredible Class Milestones this month!

Keep showing up, supporting each other, and building momentum. We can’t wait to see who joins the club next month! 🔥

07/02/2026

June Members of the Month!

🏆 Celia – Southborough
🏆 Jessie – Sudbury
🏆 Guray – Waltham

These three members represent what CrossFit TILT is all about—showing up consistently, supporting others, and making our community stronger every day. Congratulations to all three of you and thank you for making TILT such an incredible place to train!

Here’s what they love most about TILT:

💬 Guray: “The people and the community. Everyone is supportive regardless of fitness level and the coaches do a great job helping you improve while still making it fun. TILT has pushed me outside my comfort zone and helped me become stronger and healthier than I’ve been in years.”

💬 Jessie: “I love the positive energy and inclusivity here, and how helpful and friendly people are. And the coaching style!”

💬 Celia: “What I love about TILT is that all the coaches are so friendly and encouraging of everyone!”

06/22/2026

Looking for a fun way to keep your kids active?

Our CrossFit TILT Kids Fitness classes are packed with energy, games, and strength training designed to help fit your kids needs!

From relay races and obstacle courses every class is designed to keep kids moving, smiling, and having fun!

Sudbury Kids Fitness:
Grades 1st & 2nd: Mondays @3:45-4:30 PM
Grades 3rd, 4th, 5th: Wednesdays @3:45-4:30 PM
Grades 6th, 7th, 8th: Tuesday & Thursdays @5:30-6:30pm.

Where: 60 Union Avenue – Sudbury, MA.

Address

40 Jones Road
Waltham, MA
02451

Opening Hours

Monday	5:15am - 7:30pm
Tuesday	5:15am - 7:30pm
Wednesday	5:15am - 7:30pm
Thursday	5:15am - 7:30pm
Friday	5:15am - 6:30pm
Saturday	7am - 1pm
Sunday	9am - 12pm

Telephone

+16173650648

Website

http://www.crossfittilt.com/

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