Wisconsin Trail Assail Series

Wisconsin's Largest Trail Series

Presented by:

Seven races over seven months with a series ending championship.  The races are held in Waukesha County and Wisconsin State Parks. All the races have 5K and 10K distances and four of the events have 1/2 marathon distances. Run/walk some or all of the races.

Volunteers Needed!  All volunteers can race a future race free.  Register HERE.

The Silver Circle Sports Events Guarantee

Not sure about a trail run?  Come out and try it.  If you are not satisfied with our trail events, we will refund the entrance fee!  No strings attached.

Series Pricing

During registration, choose either the 5K, 10K or Half Series.  If you register for the half, you will automatically be entered into the 10K distance if there is not a half distance.

Through November $130
November - December $140
January - February $145
March - April 14 $150
Race Day TBD

Opt out of a shirt and save $10 off series price

Individual Race Price

Schedule 5K/10K 1/2 Marathon
Now - four weeks prior to race $30 $35
Four weeks - two week prior to race $35 $40
Two weeks - race day $40 $45

Register for individual races on the race website (see schedule below)

Kiddos Race for FREE

There will be a Kids 1K run (under 10).  All kids will get a bib just like Mom & Dad.  The race is FREE for the kiddos if Mom or Dad is registered and you can register on line at no charge.  Sorry no shirts for the kiddos but they can be purchased on line during registration. 

Run from the Taxman Run & Walk April 15 Lapham Peak 5K, 10K, 1/2 Marathon Results
Mother's Day Run & Walk May 13 Nashotah Park 5K, 10K, 1/2 Marathon Results
Father's Day Run & Walk June 17 Menomonee Park 5K, 10K Results
Independence Day Run & Walk July 1 Fox River Park 5K, 10K Results
National Watermelon Day Run & Walk Aug 5 Pike Lake State Park 5K, 10K, 1/2 Marathon Results
Procrastination Run Sep 17 Minooka Park 5K, 10K Results
National Sweetest Day Oct 21 Nashotah Park 5K, 10K, 1/2 Marathon Results

Please note that the distances will not be exact as it is trail running.

Race Day Schedule

7:00 Packet pick up & race day registration
7:45 Race day registration closes
7:45 Free kiddos run
8:00 Race start

Please check individual websites for details.


Overall Male & Female will receive medals. Top 3 male & female finishers in 5 year age groups will receive a custom medal.  Half marathon finishers will receive a custom Wisconsin Trail Assail 1/2 marathon finishers medal.

Average Joe & Jane Awards

Because this is a series, your age on December 31, 2017 will be used throughout the series.

Series Scoring & Points

Points are assigned by place position for each age group. Points will be based on a point system (1st place 10 points, 2nd place 9 points, 3rd place 8 points through 10th place).  You must participate in 4 of the 7 races to be eligible for the series awards.  You can switch between distances (at no cost) but you must run in at least 4 races of the same distance.  

Series age group medals given to the 3 male & female finishers in 5 year age groups. A finisher's medal is given to those that register for the series.

5K Series Points
10K Series Points
Half Series Points

More info about the FREE Team Challenge


The race is chip timed by Silver Circle Sports Events, LLC.  The Wisconsin Trail Assail uses a gun start for this series keeping in line with cross country starts.  Hey that means your time starts when the gun goes off.  If you are a speedster, you should be toeing the line.

Aid Station: 

Check out our free, fresh fruit, finish line aid station.  Sure beats stale bagels and green bananas.....


The shirts are gendar specific, dry wick and those registered the Monday prior to the race are guaranteed a custom race shirt.  After noon Monday, shirts be available while on line supplies last. Any extra shirts will be distrubuted after the race on a first come first serve basis.  The FEMALE shirts run small!


We need volunteers for everything from goody bag stuffing 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.

Weather / Refund Policy: 

Refunds are not permitted for any reason.

The event will be held unless severe weather occurs. In the event of severe weather, the race director may delay or cancel the event.  If the event is canceled, there will be no refunds. Silver Circle Sports Events has a NO REFUND policy.


This event is a Silver Circle Sports Events, LLC owned, produced, timed & managed event.  Need help with an event?  Contact us HERE.