2021 Tucson Shamrock Half Marathon / 10K / 5K ::

• 10K Run/Walk:- Run 6.2 Miles
• Half Marathon:- Run 13.1 Miles
• 5K Run/Walk:- Run 3.1 Miles

_ The  2021 Tucson Shamrock Half Marathon / 10K / 5K:

Join StartLine Racing as we continue a March tradition!

The Tucson Shamrock Half Marathon, 10K, 5K 

will take place on Saturday, March 13th at 

Crossroads at Silverbell District Park in Marana.

Virtual Run Details

Of course we want you to participate in the Tucson Shamrock Half Marathon, 10K and 5K event locally but we understand things come up.  So, if you can't join us on race day and still want to run, get the medal and shirt then you still can!  Here is your chance to take part in this event no matter where you are!  And of course, all prices include shipping!  Please note that all items will ship following the event on March 13th.

Virtual Registrations are restricted to US addresses only.  If you reside outside of the US and wish to participate please contact StartLine Racing at [email protected]

Mail-in Registration Form

To register by mail please complete and return our Mail-in Registration Form!  Please make checks payable to StartLine Racing.

Race Day Information

• Race Day Registration will be available beginning at 6:30am.

• 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 

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

• The course will take you through dedicated running trails (all asphalt and concrete), starting and ending at Silverbell Park in Marana - meaning no need for transportation before or after the race just to get back to your car!  Please note - this is an open use trail system and does not close for our event.

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

Event details and schedule

 Half Marathon Course Map

10K Course Map

5K Course Map

What You Get!

- Custom Event Medal.

- Choice of Custom Event Dri-Fit Tech Shirt for all participants.

- 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:

• 8 & Under, 9 & 10, 11-13, 14-17, 18-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75 & Over

- 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) 

- Event owned by StartLine Racing.

Course Information

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

• The course will take you through dedicated running trails (all asphalt and concrete), starting and ending at Silverbell Park in Marana - meaning no need for transportation before or after the race just to get back to your car!  Please note - this is an open use trail system and does not close for our event.

Water and Gatorade will be located at:

• Half Marathon: Miles 1.55, 3.1, 4.53, 5.57 (northern turnaround), 6.61, 8.04, 9.59, 11.07, and 12.05.
• 10K: Miles 1.55, 3.1 (turnaround), and 4.65
• 5K: Miles 1.55 (turnaround)

GU Gels will be available at miles 6.61 for the half marathon participants

Restrooms will be located on the course at miles 2.4, 8.74 and 11.07

• Note: The restrooms at mile 11.07 will be located off the course at the start/finish line area (approximately .1 miles off the course)

Packet Pick-Up Opportunities

• Packet Pick-up is available on Friday, March 12th from 3:00 - 6:00pm at TBA. 

• Race Day Packet Pick-Up will be available beginning at 6:30am.

Event Schedule

• March 12 3:00 PM - Packet Pick-Up from 3-6pm at TBA

• March 13 6:30 AM - Race Day Packet Pick-up and Registration Opens

• March 13 7:30 AM - Half Marathon Begins

• March 13 7:45 AM - 10K Begins

• March 13 8:00 AM - 5K Begins

• March 13 9:00 AM - Award Ceremony Begins (approx)

-) 2022 Race Information