4100 S Arizona Ave

Chandler, AZ 85248 

©2018 by CrossFit Endless Summer


We believe that fitness is not a hobby, but a way of life. We founded our gym to be the second home for all of our customers. Whether you are an elite athlete or have never stepped into a gym, CrossFit Endless Summer can help shape the new you. Our coaches have years of experience with all levels of athletes including games level athletes.   Contact us today!


Everyone knows that exercise is good for you. But at CrossFit Endless Summer, it isn't just you.  Its about a community that pushes one another to be better than they were yesterday.  It's about coaches that truly want to make a difference in the lives of others.  Its about members that want to connect with members outside of the gym.  Our goal is to have you looking, feeling, and performing better than ever.  Inside and outside of the gym.


Get to Know Us

Charles "Chazz" Rudolph

Head Coach

Chazz has always had a passion for health and fitness. This and a love of country navigated him towards the United States Marine Corps. After his enlistment he began providing protection for the US Government throughout the Middle East. It was there that he discovered CrossFit. Through this his passion for fitness evolved into a passion for coaching. In 2008 Chazz became the co-owner of a CrossFit gym in Boise, ID. He continued to develop his coaching here. Now based in the Phoenix area, he now trains not only athletes of the highest caliber but also people of all ages and fitness levels. Always wanting to lead by example, Chazz continuously finds ways to apply his fitness. That includes competing in weightlifting, weekend hikes, exploring foreign countries, or chilling out with his new pup, Utah.

Specialties: Weightlifting, Strength and Conditioning, Powerlifting, Sports Specific Training, Military Prep

Sidney Donzella


Sidney was introduced to Crossfit in 2016 while completing her undergraduate degree in exercise science at Northern Arizona University. After 12 years of competitive gymnastics and 4 years of training in boxing and kickboxing, Crossfit continues to draw her in due to its incredible versatility for all ages and fitness levels. While completing her degree, Sidney became a certified group exercise instructor and has taught classes such as boxing bootcamp, cycle, TRX, and HIIT ever since. Sidney continues to expand her coaching knowledge working as an EXOS Health Fitness Specialist where she primarily works with general population clients as well as some athletes. Outside of fitness, she loves traveling, eating pizza, exploring new coffee shops, and watching The Office. 

CrossFit Level 1
AFAA GroupEx
EXOS Fitness Specialist
EXOS Performance Specialist 
Speedo Fit Training

Addy Diaz


Addy is an accomplished young athlete and student currently pursuing a Bachelors in Biology. Addy has a passion for CrossFit and community while having fun including hiking and traveling.


CrossFit Level 1

4 Years of CrossFit

Competed at Junior Nationals for weightlifting

Studying Premed at Grand Canyon University

Loves scary movies, chocolate milk and donuts


Hear It From the People Who Know Best

“I can’t believe it took me so long to get off the couch and finally hit the gym. Joining CrossFit Endless Summer seriously turned my life around. They have the equipment and personal trainers to make everyone feel at home.”

Kris Michaels

“Not only does CrossFit Endless Summer have all the equipment I need to work out, they also have personal trainers who I trust and respect. Thanks to CrossFit Endless Summer, I’m in the best shape of my life.”

Frankie Bolder

“I’ll be honest — I used to hate exercising in groups. But the classes at CrossFit Endless Summer are so much fun, I come to one almost every day. The time flies by and I can never believe it when the class is finished.”

Quinn Davis