Strive & Uplift

RenFitness is the best fitness, friends. Make no mistake.


Check out the new gym!


On January 1st 2017, the very first RenFitness Gym opened in the Ballard neighborhood of Seattle!! This awesome new space allows us to expand our programming for the ultimate community. As far as we know, this is the first large indoor space in the world that is entirely devoted to Ultimate Frisbee. Woohoo!


Program Offerings:

  • Courses from Women's Lifting to RenFit to Turf Conditioning
  • Team programming and clinics
  • Open Gym times: train on your own and use the turf
  • Mini and Goaltimate pickup and leagues 
  • Events (tournaments, clinics, movie nights)
  • Field space and facility rental
  • Expanded RenFitness internship and coaches program

Physical Features:

  • 3000SF of indoor turf
  • Functional training equipment (kettlebells, squat racks, foam rollers, the works)
  • Meeting space inside the building
  • 2 gender-neutral restrooms and a shower
  • Community area with couches/TV and tables/chairs
  • Huge parking lot (37 spaces) and lots of street parking

Don't live in Seattle?

We’re planning on offering a Virtual Gym subscription to share our programming and seminars with you, hopefully as early as June of 2017!

Please contribute!

We're still hoping to crowdsource some essentials for the gym, especially cardio equipment - email us at renultimate@gmail.com if you have something to contribute!


Gym Schedule


RenFitness Gym hours change quarterly to accommodate the seasonal needs of the ultimate community. You can get into the gym to work out on your own or play games on the turf using a gym access pass, or work out with a group in one of our many courses. For special events including clinics, tournaments, and social gatherings, check our events calendarAll the white space on the calendar is available for rentals such as team workouts and community programs!

We want to be a gym that is accessible and welcoming to everyone in the ultimate community, so please let us know if you are unable to afford our rates, and we'll work with you on pricing!


The gym will be CLOSED Saturday, January 21st. Click here for the detailed announcement

Gym Schedule.jpg


Gym Access passes give you access to strength training equipment to use on your own during, as well as the larger turf (depending on availability), including organized goalty and mini pick-up and leagues during business hours. Sessions are available 7 days a week!


Monthly GYM ACCESS Passes

Monthly Gym Access passes make it cheaper and easier to use the gym the way you want!




per month + tax

The Once-A-Week pass includes:

  • 4 Gym Access sessions per month
  • 25% off additional sessions ($7.50 + tax ea.)
  • $5 off all course enrollments
  • Free access to community events like movie nights, game viewing, etc.



per month + tax

The Twice-A-Week pass includes:

  • 8 Gym Access sessions per month
  • 38% off additional sessions ($6.25 + tax ea.)
  • $5 off all course enrollments
  • Discounts on tournaments on the gym turf, seminars, workshops, and biweekly clinics
  • Free access to community events like movie nights, game viewing, etc.



per month + tax

The Four-A-Week pass includes:

  • 16 Gym Access sessions per month!
  • 45% off additional sessions ($5.50 + tax ea.)
  • $5 off all course enrollments
  • Discounts on tournaments on the gym turf, seminars, workshops, and biweekly clinics
  • Free access to community events like movie nights, game viewing, etc.

Gym ACCESS Drop-Ins

Come into the gym and work out for $10 + tax each time without a monthly plan. If you’ve purchased a monthly plan you can drop in at a discount once you've used all your sessions for the month!


Ultimate Athlete Project PArtnership

Want to have a plan when you come in to work out on your own? Join the Ultimate Athlete Project, a program specifically designed for ultimate players looking to take their training to the next level. 

Members of the UAP will receive $10 off a movement eval with Ren and 10% off the first three months of a twice-a-week or four-a-week gym access plan.


Four-Week Courses

Register now for the January session!


Sport-specific group training sessions based on getting stronger, more injury-resistant, and upping on-field performance. The atmosphere is both fun and focused, and there is a lot of talk about how the movements we do on any given day translate to the game. Commit to a weekly session for 4 weeks for $48 (plus tax) and get a complete progression of skills, building on what you learn each week. Want to try the class before you sign up for the full course? Single class drop-ins are $15 (plus tax).


The current session is Winter Session 1 (Jan 2nd - Jan 27th). Course sign-ups for Winter Session 2 (Jan30th - Feb 24th) will go up on Jan 22nd!


RenFit          NEW - Turf Conditioning          Womens' Lifting Night          ReMastered


Designed for the ultimate athlete, this class is organized around different skill sets and goals within the game (change of direction, first three steps, verticality). It’s a mix of strength/power work and metabolic conditioning!

$48 + tax - Purchase required for enrollment
Includes four classes

Want to try a RenFit class before you sign up? Buy a one time pass

Monday Evenings, 8-9 PM

Jan 2 - Jan 23

Tuesday Evenings, 6-7 PM

Jan 3 - Jan 24

Wednesday Mornings, 7-8 AM

Jan 4 - Jan 25

Wednesday Evenings, 7-8 PM

Jan 2 - Jan 23

Thursday Evenings, 7-8 PM

Jan 5 - Jan 26


Turf Conditioning

Often, ultimate players do “track workouts” designed for other sports. Turf conditioning will work on speed, agility, and quickness with the movement patterns of ultimate, while giving you a solid workout.

$48 + tax - Purchase required for enrollment
Includes four classes

Want to try a Turf Conditioning class before you sign up? Buy a one time pass

Wednesday Mornings, 6-7 AM

Jan 4 - Jan 25

Wednesday Evenings, 8-9 PM

Jan 4 - Jan 25

Thursday Evenings, 6-7 PM

Jan 5 - Jan 26


Womens' Lifting Night

We work hard, we pick up heavy stuff, we swing kettlebells. We work through a periodized strength/power program, and encourage each other to lift outside of class. We have fun!!

$48 + tax - Purchase required for enrollment
Includes four classes

Want to try Womens' Lifting Night before you sign up? Buy a one time pass

Tuesday Evenings, 7:30-9 PM

Jan 3 - Jan 24



Masters players often have a larger injury history and more ingrained movement patterns - we work on increasing mobility, learning proper form and modifications for strength/power exercises, and getting our sweat on with our friends!

$48 + tax - Purchase required for enrollment
Includes four classes

Want to try a ReMastered before you sign up? Buy a one time pass

Monday Evenings, 7-8 PM

Jan 2 - Jan 23

Friday Mornings, 6:30 - 7:30 AM

Jan 6 - Jan 27


Custom Programming


Personal Training

Individual or duo sessions are a great way to get eyes on your form and specific programming to help you achieve your goals! Prices vary depending on the amount of trainer experience and how many sessions you purchase.

Movement Evaluations

If you want to get the most out of your training, a FMS (Functional Movement Screen) assessment and follow-up is an amazing tool. The FMS is used as a diagnostic tool worldwide by doctors, PT’s and trainers alike.


Team Options

We offer a variety of services to teams on an a la carte basis, allowing us to meet a team’s specific needs and maximize training time. Everything from one-time strength training or speed/agility clinics to regular lifting programming to sideline support - we’ve got what you need to keep your team high-performing and healthy!




In our new space, we’ll have the opportunity to run several types of evening leagues for goaltimate and mini on our 34’ X 70’ indoor field - stay tuned for more details as the gym nears opening!

Clinics, Workshops, & Seminars

These are offered regularly to the Seattle community at large, but also commissioned by teams both local, national and worldwide! Ren Caldwell has developed programming suitable for all ages/levels, focusing on soft tissue work/mobility, speed/agility, footwork/plyometrics, and strength/power training. We also host experts who want to present their methods to our Seattle community!

Social Events

Movie Nights, game film screenings, lock-ins and parties will abound in the Ballard space - keep your ears open, there will be a lot of fun going on!!

About RenFitness


Strive and Uplift

RenFitness, LLC is a strength and conditioning team based in Seattle, established by Ren Caldwell. We’re passionate about creating programming, resources and providing education for ultimate frisbee players locally and around the world. Our goals are to reduce injury risk for field athletes, improve on-field performance, and give players the tools and knowledge they need to pursue their sport at whatever level they desire.


Contact Us



RenFitness Gym Ballard
1404 NW 49th Street
Seattle, WA 98107

About our team

Ren Caldwell, NSCA CSCS, FMS


Owner, Strength and Conditioning Coach

In the last few years, I’ve focused on providing high quality, sport-specific and innovative programming to the ultimate community. I’m committed to working with people to improve their movement patterns and safely load their bodies, especially young female athletes! I write a monthly training column for Skyd Magazine (which has worldwide readership), have released instructional videos through RISE UP, and have been flown around the country and the world to educate ultimate players and coaches. FUN FACT: I used to be a professional modern dancer!


Bert Abbott, NSCA CSCS

Team Programming Coordinator, Strength and Conditioning Coach

I recently made the switch from teaching secondary science to strength and conditioning coaching for ultimate players. As a long-time youth coach and a captain of Seattle Mixtape, I'm excited to work with the Seattle ultimate community in this new capacity. I'm interested in helping teams and individuals move their work in the gym and on the field from simply exercising to sport-specific training. 


Kira Morin, Basi Pilates Instructor

Business Manager, Core & Stabilization Coach

I have been playing recreational ultimate for 10 years and more competitively in the last couple years. I have always loved the spirit of the game and the community it brings. When I got injured (hip labral tear and annular tear in my spine) I turned to RenFitness and Pilates to avoid surgery and to get stronger. It worked! When I heard that Ren wanted to open a gym, I jumped at the opportunity to help in any way I could. I have a background as a Pilates Instructor and in Organizational Development. I like helping people be healthy and strong, and creating systems that help people and organizations be successful. With RenFitess I get to do all of that and get to work in a place that cultivate the ultimate community!