In 149 days · Sun, Mar 14, 2027
Don't let race day sneak up
One email during race week. That's it.
Sunday, March 14th, 2027
3482 E River Rd, Tucson AZ
10K · Half · 5K
49–73°F · low rain risk
See last 10 years
On this date: rain 0 of the last 10 years
2026
59–86°F
dry
2025
41–52°F
dry
2024
45–69°F
dry
2023
48–76°F
dry
2022
49–75°F
dry
2021
40–61°F
dry
2020
50–68°F
dry
2019
40–55°F
dry
2018
57–83°F
dry
2017
56–89°F
dry
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Going long?
Fuel wins races.
Gels, chews, electrolytes, anti-chafe — everything for 13.1 and beyond.
About this race
Join StartLine Racing as we continue a March tradition!
The 10th Annual Tucson Shamrock Half Marathon, 10K, 5K
will take place on Sunday, March 14th at
Brandi Fenton Memorial Park.
Event details and schedule
Mail-in Registration Form
To register by mail please complete and return our Mail-in Registration Form! Please make checks payable to StartLine Racing. Mail-in registrations will be accepted until March 8, 2027.
Virtual Run Details
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 swag 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 14th.
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]
What You Get!
Custom Event Medal.
Choice of Custom Event Tech Shirt for all participants. Option to select a pair of compression arm sleeves or socks.
Male and Female 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, 75-79, 80 & 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)
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 Information
Race Day Registration will be available beginning at 6:30am.
We accept cash, and credit cards on race day
Race Day prices:
- Half Marathon - $90
- 10K - $60
- 5K - $50
Strollers welcome
Leashed pets welcome
The course will take you through dedicated running trails (all asphalt and concrete), starting and ending at Brandi Fenton Memorial Park in Tucson - 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.
This event will take place rain or shine. There are no refunds for due to weather.
The time limit for the Half Marathon course is 4 hours.
Course Information
Gatorade and Water will be available at all water stations.
Water will be located at:
- Half Marathon - Miles 1.55, 3.1, 5.1, 6.55, 8.1, 10, and 11.55
- 10K - Miles 1.55, 3.1, and 4.65
- 5K - Mile 1.55
Restrooms will be located on the course at:
- Half Marathon - Miles 3.11, 5.1, 8.1, and 10
- Restrooms at Miles 3.11 and 10 will be at Rillito Regional Park (restrooms directly next to the running trail)
- Restrooms at Miles 5.1 and 8.1 will be at Children's Memorial Park (restrooms directly next to the running trail)
- 10K - Mile 3.11
GU Gels will be located on the course at:
- Half Marathon - Miles 5.1 and 8.1
The cut-off time for the Half Marathon will be 4 hours
Course Maps
Half Marathon
10K
5K
Packet Pick-Up Opportunities
Packet Pick-up is available on Saturday, March 13th from 2:00 - 5:00pm at Road Runner Sports (map).
- Road Runner Sports is located at 7113 N Oracle Rd, Tucson, AZ 85704
You can also pickup your packet on race day starting at 6:30am.
Event schedule
- Sat, March 13, 2027 2:00 PM - Packet Pick-Up from 2-5pm at Road Runner Sports
- Sun, March 14, 2026 6:30 AM - Race Day Packet Pickup and Registration Opens
- Sun, March 14, 2027 7:30 AM - Half Marathon Begins
- Sun, March 14, 2027 7:45 AM - 10K Begins
- Sun, March 14, 2027 8:00 AM - 5K Begins
- Sun, March 14, 2027 9:00 AM - Award Ceremony Begins (approx.)
Course map
Train with a club
Run clubs near Tucson to train with before race day.
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