DEFENDER 5k and 2.2 mile Ruck logo
runningRace day in 26 days

DEFENDER 5k and 2.2 mile Ruck

Date
June 6, 2026
Distance
DEFENDER 5K · Defender 2.2 mile · Virtual Challenge

From the Organizer

4TH ANNUAL SGT.  ANTHONY MUHLSTADT DEFENDER RUCK

 

DEADLINE FOR GUARANTEED EVENT SHIRT IS MAY 15th.

AFTER MAY 15th, T-SHIRTS WILL BE BASED ON AVAILABILITY.  THANK YOU

Proceeds to benefit local organizations committed to battling military suicide

Ruck. Remember. Defend.

Anthony’s Defender Run/Ruck or Walk is more than a physical challenge—it is a mission of purpose, remembrance, and ACTION.

We ruck to honor Sgt. Anthony Patrick Muhlstadt, USMC, and every service member who has silently carried the weight of stress, trauma, and isolation while serving our country. Anthony’s life, service, and loss remind us that strength does not mean suffering alone—and that suicide prevention begins with connection, education, and courage.

This event exists because suicide is claiming the lives of our active-duty military and veterans at an alarming rate, and too often the warning signs are missed. Anthony’s Defender Ruck was created to bring those conversations out of the shadows and into the open—where real change happens.

When you participate, you are doing more than showing up:

You are standing in defense of life
You are raising awareness for suicide prevention
You are funding critical training and resources that equip people to recognize the signs, have hard conversations, and intervene when it matters most
You are honoring the fallen and supporting the living


Whether you ruck in person, participate virtually or sponsor, you become part of a community that refuses to stay silent and chooses to lead with action.

We ruck to remember
We ruck to protect those still serving.
We ruck so others know they are never alone.

Thank you for stepping up, shouldering the weight, and defending hope.

This year we’ve added a couple fun new options:

Create-a-Team (ruck, run, or walk together!)
Referral rewards + new swag rewards when you invite friends to register

Refer 5 people using your unique link and receive up to a $20.00 refund
Refer 10 people using your unique link and choose a Sgt. Anthony Patrick Muhlstadt Foundation t-shirt or a foundation tumbler

The Defender 5K and Ruck Walk is also a celebration of life; the lives that were lived in honor of God, Community, and Country. Participants are welcome to join Anthony's family and friends for a special birthday celebration after completion of the Defender Ruck Walk. There will be music, vendors, giveaways, camaraderie, friendship, love, and, of course, birthday cake. Participants are encouraged to use their own devices (smartwatches, etc.) to track their times. 

Distances & Pricing

DEFENDER 5K6 AMRegister →
Defender 2.2 mile6 AMRegister →
Virtual Challenge6 AMRegister →

Race Location

About This Sport

From Endurance Grid's Founder

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.

Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.

Running

From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Frequently Asked Questions (FAQs)

What is the DEFENDER 5k and 2.2 mile Ruck?
DEFENDER 5k and 2.2 mile Ruck is a running event held in Saint Petersburg, FL. Learn more about the different endurance sports here.
When and where is the DEFENDER 5k and 2.2 mile Ruck?
Saturday, June 6, 2026 in Saint Petersburg, FL at 7700 16th St. N., Saint Petersburg, FL. Check the official event page for exact start times and wave schedules.
How do I register for the DEFENDER 5k and 2.2 mile Ruck?
Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.

DEFENDER 5k and 2.2 mile Ruck

Jun 6, 2026

Register →