San Antonio's Shamrock Shuffle

Sign up for San Antonio's Shamrock Shuffle!

Lace up your luck and get ready to paint the town green! The San Antonio Shamrock Shuffle is back, with a new location Martin Luther King Park, on Saturday, March 14, 2026, for a high-energy celebration of running, community, and all things Irish. Whether you’re chasing a personal best on our fast, scenic course or just here to "jig-jog" with friends and family, this is the ultimate St. Paddy’s tradition.

Here is what is waiting for you at the finish line:
The "Pot of Gold" Loot: Every runner scores a custom Shamrock Shuffle finisher medal and a limited-edition race shirt!

Festive Fuel: Toast to your finish with legendary green beer (and plenty of post-race snacks).

Spirited Competition: Go for the win to earn real shamrocks for awards, or join the costume contest in your wildest leprechaun gear.

Family Fun for All: Kick off the morning with the 1K Kid’s Run at 8:00 AM before the 5K starts at 8:30 AM.
Don't leave your spot to chance! Register on RunSignup by February 23rd to guarantee your shirt and finisher award.

🎉 What to expect:
☘️ A lively, well-marked course
🍺 Green beer at the finish
🎶 Music, costumes, and festive vibes
🏅 A Shamrock Shuffle celebration you won’t forget

All 5k runners registered by February 23rd, 2026 will be guaranteed a t-shirt and finishers award. After February 21st, our available inventory will be represented in registration. If you are able to register for a size, we have it in stock. We will swap shirt sizes after the event starts based on availability. We will also distribute unpicked up shirts to those who did not get one after the event starts. If you do not check in at one of the packet pickups, we will not hold your shirt.

Packet Pickup Details:

Thursday March 12th, 2026  10am - 7pm

Friday March 13th, 2026  10am - 7pm

iRun at Bitters - 2602 NW TX-1604 Loop # 106, San Antonio, TX 78248

Race day packet pickup will begin at 7am until 8:15am on race day at the race location, MLK Park.

Race Day Schedule:
7am - Packet Pickup and Race Day Registration
8am - 1K Kid's Run Start
8:30am - 5K Start
9:30am - Awards

Awards & Prizes:
Overall & masters male and female
Age groups in the 5K:
1-14, 15-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70+
No duplicate awards. Registration and chips are required to be eligible for awards.

There are no refunds for the race. We recommend you purchase race insurance when you register.
To produce an awesome race, we coordinate our efforts and plan well in advance, making it difficult and costly to make changes after registration. Medals, bibs, shirts and other items are ordered months before the race and purchased according to the original information provided during registration. As a result, and similar to other races in the industry, iRun Texas and Split Second Productions does not offer refunds of registration fees for any reason. In addition, release forms and emergency content are specific to the individual participant. Transferring such information would be a liability to the participant as well as the race. This policy applies to individuals with injuries, unexpected business, family emergencies, etc. There are no exceptions.

Thursday March 14th, 2024  10am - 7pm

Friday March 15th, 2024  10am - 7pm

iRun at Bitters - 2602 NW TX-1604 Loop # 106, San Antonio, TX 78248

Race day packet pickup will begin at 7am until 8:15am on race day.

The first 100 participants to pick up their packet at iRun Bitters will receive a free pair of Feetures socks. *Sizes are available on a first-come-first-serve basis and are not guaranteed. 

Runners are allowed to pick up packets for other runners with their permission.