Half Marathon

$40 8:00AM CDT Price increases after August 18, 2022 at 11:59pm CDT


$30 8:00AM CDT Price increases after August 18, 2022 at 11:59pm CDT


$30 8:00AM CDT Price increases after August 18, 2022 at 11:59pm CDT

Kiddos 1K

$0 7:45AM CDT Registration ends September 18, 2022 at 9:30pm CDT
We're Turning 10!

1927 E Sunset Drive
Minooka Park
Waukesha, WI US 53189

Can you conquer Killer Hill?  The 5K climbs it once, 10K twice and the half three times.  They call it Killer Hill for a reason!

The course is on wide groomed trails. Most of them are chipped covered, but there are some area with rocks and roots.


The shirts are gender specific, dry wick and those registered noon September 4th are guaranteed a custom race shirt.  After that, shirts be available while on line supplies last. 

Everything you ever wanted to know about shirts can be found right here.  The FEMALE shirts run small!

Run/Walk Courses
Fresh Fruit Bar

Check out our free, fresh fruit, finish line aid station.  Sure beats stale bagels and green bananas.....This may not be available depending on the status of covid restrictions.

Finisher Medals And Awards
Overall Awards

Overall Male & Female runners for each distance will receive a custom award provided by our partner Ridgeway Woodworks

Age Group Awards

Top 3 male & female finishers in 5 year age groups will receive a custom medal. Age groups are 0-14, then every 5 years.

Finisher Medals

1/2 Marathon Distance finishers will receive a custom finisher medal.

Miss your medal? There are three options to obtain medals:

1. Pick them up at our office the Tuesday following the race. The medals are located in a black box in front of our office entrance 24/7.
2. They can be mailed by clicking here. There is a fee because the mailman won't work for free.
3. Pick them up at a future WTA race’s packet pickup. Medals will only be available after the race.

Kiddos Run For Free

Kids can run the FREE Kiddo's 1K if a parent is running. They will get a bib and finisher medal, but they must be registered in order to run. Shirts are available for purchase during registration.

Packet Pickup & Schedule


You do not need to print it. We will need to scan the QR code on the receipt, though, so please have your email accessible on your mobile device or save a picture of your receipt with the QR code to your device’s image library.

Friday, September 16 - Early Packet Pickup
Location and Time - TBD 

Sunday, September 18
8:00 am - Packet Pickup Opens
8:45 am - Kiddo's 1K Race Starts
9:00 am - 5K, 10K and Half Starts
12:00 pm: Course Closes

We strongly encourage you to register prior to race day. If you decide to register race day, we only take registrations electronically.


We need volunteers for everything from aid station support to course marshals. If you or your group have an interest in volunteering, we would greatly appreciate the assistance. All volunteers can run a future race at no charge. Register to volunteer by clicking on the volunteer link in the menu above. For more information on volunteering click here.

Register by clicking on the volunteer tab on the top of the page.

Aid Stations & Bag Drop

There will be two aid stations on course with water, sports drink and energy gels.. They may be self serve.

There will also be an on-course bag drop area for you to leave your nutrition and hydration items. It is located across the road from Picnic Area 3. This is a self-placement and self-serve bag drop. 


Restrooms will be at the start/finish line.

I want to....


  • Login into
  • Select your Profile.
  • Scroll down to the race you would like to modify.
  • Select "Manage Registration".
  • All of the race options will be listed on the menu (transfers, change shirts size, modify team, change distances, resend confirmation / QR code & deferrals)

Parking is available at the parks. There is a $6.00 county park day pass or an annual pass required. Both the annual pass and daily pass must be purchased online BEFORE the event.  There is NO in person payment available.

Charity Partner

Silver Circle Foundation, Inc 501(c)3 is dedicated to supporting the needs of our firefighters, police officers, veterans, and troops serving overseas through charitable giving, care packages, and fundraising.


Insurance is available for almost all of our events and can be purchased during the registration process. The insurance is offered through a third party. Here is the fine print:

Registration protection options allow your race participants to get reimbursed up to 100% if they cannot attend the event for a number of reasons, including covered injury, illness, traffic accidents, and more. Registration Protector with Required to Work has the added benefit of protection in the instance that a race participant is required to work for a covered reason.

Terms, conditions, and exclusions apply. Insurance benefits are underwritten by Jefferson Insurance Company. AGA Service Company is the licensed producer and administrator of these plans.

Registration Protection - The insurance premium is 6.75% of the registration cost (including processing fee), with a minimum insurance premium of $7.99 per registrant.

Insurance claims can be filed at

Race Contact Info

If you have any questions about this race, click the button below.

This is a Cupless race!

The Wisconsin Trail Assail Series is a cupless series!

The idea of throwing 100,000+ cups in a landfill each year doesn’t seem in line with what most runners support. This has been in the works for 2+ years, but covid interrupted its implementation. Now is the time to do it!

Don’t worry, we’re NOT doing away with aid stations. There will still be aid stations with water and sports drinks at events, just no cups! You will need to bring a reusable cup with you. We are also expanding the areas for a bag drop where you can leave a nutrition/hydration bag.


Race Participant Survey

Please complete the following survey to help us better understand your race experience.

Did you participate in the race?

Would you recommend this race to a friend?

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