Tucson Shamrock Half Marathon / 10K / 5K

The 5K distance will feature a 'Chase the Leprechaun' for 2023! A leprechaun will be set loose on the course for all of our participants to find. Any participant to pass the leprechaun and finish the race will receive a prize at the finish line. No additional registration required. Open to all 5K participants.

To register by mail please complete and return our Mail-in Registration Form! Please make checks payable to StartLine Racing. We are sold out and will not be accepting mail in registrations as of March 10th

Of course we want you to participate in the Shamrock Half Marathon, 10K and 5K event locally but we know things come up. So, if you can't join us on race day and still want to run, get the medal and the shirt then you still can! Here is your way to take part in this event no matter where you are! And of course, all prices include shipping! Prior to the event all virtual participants will receive an email with instructions on how to submit your time. Please note that all items will be shipped following the event on March 18th.

Virtual Registrations are restricted to US addresses only. If you reside outside of the US and wish to participate please contact StartLine Racing at info@startlineracing.com

Custom Event Medal.

Choice of Custom Event Tech Shirt for all participants. Option to choose 'No Shirt' and get $5 off your registration

Age Group Awards for Top Three in all Age Groups for the half marathon, 10K and 5K (Race day participants only). Our age groups are the following:

Pre- and Post-Race "Runner's Brunch" (granola bars, fruit, water, Gatorade, etc)

Chip Timed with Real Time Results and Photos on our Website or Mobile App (on Apple and Google)

Owned and operated by StartLine Racing!

Please note any race related items (shirts, medals, etc.) will NOT be mailed to those that do not attend.

Race Day Registration will be available beginning at 6:30am. There will be no race day registration available as we are sold out.

We accept cash, check, and credit cards on race day

Race Day prices:

• Half Marathon - $85
• 10K - $55
• 5K - $45

Strollers welcome

Leashed pets welcome

Due to the common start/finish line, there is no bag check for this event.

This event will take place rain or shine. There are no refunds for due to weather.

There is a 4 hour time limit on the half marathon course.

Water will be located at:

• Half Marathon: Miles 1.55, 3.1, 4.8, 6.55 (turnaround), 8.3, 9.975, and 11.55.
• 10K: Miles 1.55, 3.11 (turnaround), and 4.66.
• 5K: Miles 1.55 (turnaround)

GU Gels will be available at miles 4.8 & 8.3 for the half marathon participants

Restrooms will be located on the course at

• Half Marathon: Miles 3.1, 5.7, 7.3, 9.975
  • Note: Restrooms at miles 5.75 & 7.3 are at Christina-Taylor Green Memorial River Park (immediately next to running route)
• 10K: Mile 3.1 (turnaround)

Packet Pick-up is available on Friday, March 17th from 3:00 - 6:00pm at Fleet Feet Oro Valley (map)

• Fleet Feet is located at 7607 N Oracle Road in the Oracle Crossings Shopping Center.

You can also pickup your packet on race day starting at 6:30am.