Tucson Shamrock Half Marathon / 10K / 5K event

Join StartLine Racing as we continue a March tradition!

The Marana-Tucson Shamrock Half Marathon, 10K, 5K 

will take place on Saturday, March 16th at 

Crossroads at Silverbell District Park in Marana.

Virtual Run Details

Of course we want you to participate in the Marana-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 16th.

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

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 - $80
    • 10K - $50
    • 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 Racerback Tank or 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:

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

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

- Course set/marked by StartLine Racing to maximize your experience! 

Course Information

Water and Gatorade will be located at:

• Half Marathon: Miles 1.13 (southern turnaround), 3.43, 5 ,6.17 (northern turnaround), 7.34, 8.89, 10.8, and 12.
• 10K: Miles 1.17, 2.73 (turnaround), and 4.35
• 5K: Miles 1.17 (turnaround)

GU Gels will be available at miles 6.17 for the half marathon participants

Restrooms will be located on the course at miles 2.26, 5, 8.89, and 10.8

• Note: The restrooms at mile 2.26 and 10.8 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 15th from 3:00 - 6:00pm at Fleet Feet Sports in Oro Valley (map). 

  • Fleet Feet is located at 7607 N Oracle Road in the O