San Antonio's Shamrock Shuffle

Sign up for San Antonio's Shamrock Shuffle!

Get ready to run lucky at one of San Antonio’s most festive races of the year! The San Antonio Shamrock Shuffle is back and taking over the beautiful Martin Luther King Park (3503 Martin Luther King Dr, San Antonio, TX) for a high-energy celebration of running, community, and all things green.

This fun-filled race features a fast, scenic course through MLK Park, perfect for runners of all levels, whether you’re chasing a PR or just out to shuffle with friends. Expect shamrocks, spirited crowds, and a post-race party worthy of St. Patrick’s Day.

🎉 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.