Race Description

This is the 15th Annual Team Red Shamrock Trail Challenge to benefit Red Shamrock Foundation (RSF). We are returning again to Coralville Creekside Park with a 5K and 10 mile distances. NEW this year! To celebrate 15 incredible years of the Team Red Shamrock Trail Challenge, we’re launching a special 1,500-meter race—a fun, fast, and family-friendly way to introduce yourself to trail running and join the anniversary excitement.
5K awards ceremony will begin around 10:00 AM and the 10 mile awards will start around 11:15.10 mile participants need to finish by noon. Race will be chip-timed by Nonstop Race Management.

Registration Info

Registration will open January 1, 2026 with a one day special registration fee! Pediatric cancer survivors receive free entry to the race; contact katie@redshamrock.org for the coupon code.
5K: $20 only on January 1, 2026, $35 January 2-February 28, $45 March 1-28 (online registration closes). $55 day-of race registration. 10 mile: $30 only on January 1, 2026, $45 January 2-February 28, $55 March 1-28 (online registration closes). $55 day-of race registration.
1500M (1K) Fun Run: $15


***NO REFUNDS OR BIB TRANSFERS***

Spring weather is always unpredictable, even more so in recent years. With this in mind, please understand that the race reserves the right to modify the course for matters related to runner safety or trail condition concerns or to cancel the race in the case of natural disaster, pandemics, park closures, city/county/state restrictions, etc. In situations like these, there will be no refund of registration fees. These types of decisions will be weighed heavily and ALL effort will be made to hold the event as planned.

DEFERRAL POLICY
If you are unable to participate after having registered, you can defer to the 2027 race via UltraSignUp. The deadline (end of day) to request a deferral is March 28, 2026.

About

WHO IS THE RED SHAMROCK FOUNDATION?
The Red Shamrock Foundation is a 501(c)(3) non-profit charity that was organized in 2011 to raise awareness for the unique health care needs of pediatric cancer survivors and works to support survivorship programs and post cancer research in Iowa and beyond. Helping childhood cancer survivors and their families thrive through direct assistance, education and inspiration is our passion. Learn more at redshamrock.org

WHAT WE SUPPORT
Studies have shown 70-95% of childhood cancer survivors suffer from chronic health conditions called ‘late effects’. By raising awareness of these unique health care needs of pediatric cancer survivors, our goal is to better the lives of cancer survivors and their families across the state of Iowa and beyond.

No Coast Trail Series

The Team Red Shamrock Trail Challenge is also part of the No Coast Trail Series, a group of trail races in Central and Eastern Iowa that was organized to promote trail running in Iowa. For more information on the series go to http://www.nocoasttrailseries.com

Course Info - Subject to Change!

The 5K and 10 mile will have the same start/finish line, with the 5K runners turning around at the 2ish mile point with another 1 mile back to the finish line. Leashed dogs are welcome on the course.

The 10 mile course is going to be out-and-back.
The route will be on grass, dirt, and paved trail. The hilliest section is the first mile when you'll ascend the grass Cross trail. The route will then go through the Cross/Flow trails, onto either the dirt single track or the paved Clear Creek Trail (again, depending on conditions). We don't want to trash the dirt single track. The trail goes under Deer Creek Rd. This is where the 5K runners will turn and head back to the finish.

After going under Deer Creek Rd, the 10 mile route will continue onto the paved Clear Creek trail briefly before hopping onto the dirt single track of Woodpecker trail, going to the Tom Harkin trailhead area with an aid station including toilets. 10 milers will continue on Woodpecker Trail back to the start line. This is preliminary and subject to change.

Aid Stations: There will be water and snacks at the start/finish. There are flush toilets and running water at the start/finish.
Here is an estimated map of the 10 mile route:
On The Go Map

Swag & Awards

Swag is for the 5K and 10 mile distances. A short-sleeve tee is included with your registration fee with the option to upgrade to a long-sleeve technical hooded tee shirt; if you do not want a shirt, simply do not enter a size. There is no price discount for not requesting a shirt and a shirt is not guaranteed if registration is after March 20.

Top male and female winners will each receive a free pair of running shoes courtesy of Active Endeavors! We'll also award top male and female finishers in the following age groups: 14 and under, 15-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70 and over.

Packet Pick-Up

Packet pick-up is Friday, April 3 from 4:00-7:00 p.m. at Active Endeavors, 920 E 2nd Ave Suite 110, Coralville, Iowa. You can also pick it before the race from 7:30-8:30 a.m. at the starting line.

Contact Info

Race Director: Katie Voss
Email: katie@redshamrock.org

Executive Director of Red Shamrock Foundation: John Hall
Email: john@redshamrock.org

2026 Sponsors

Active Endeavors Coralville
Hills Bank & Trust
Edge Realty Group
Field Day Brewing Co.
Coralville Parks & Rec
Athletico Physical Therapy
New Pioneer Food Co-op

Post Race Party

Thank you to our post-race party sponsor, Field Day Brewing Co., for providing every participant with a drink token and the space for us to celebrate!
Where: The duck pin/bar area of Field Day Brewing Co., 925 Liberty Way, North Liberty
When: Saturday, April 4 starting at 11 am in the duck pin room.

Event's current local time: 12:15 AM CT