Thu, Jul 13 - Sun, Jul 16, 2023

WeatherTech International Challenge July 13th-16th

Road America

About this event

"KAS" Kastner in his TR3

A mid-summer favorite, The WeatherTech® International Challenge with Brian Redman is one of the largest vintage racing events in the United States and features over 400 cars competing in several groups. 2023 will feature The Kastner Cup. Don’t forget to mark your calendars as the Concours d’ Elegance is Located Downtown in the Village of Elkhart Lake, WI.  Friday Concours d'Elegance is for RACE CARS THAT ARE ENTERED IN THE EVENT and Saturday Concours d'Elegance is for STREET CARS! Both nights are a can’t miss event for any enthusiast. 

2023 will mark the 21st running of the Kastner Cup. The race will celebrate the 71st year of Triumph sports cars in competition. The Kastner Cup was named in recognition of the career accomplishment and legacy of R.W. “Kas” Kastner who passed away on April 11, 2021 at the age of 92. Kas Kastner was one of the most influential individuals responsible for the racing success of Triumph sports cars from the late 1950’s through 1970 and beyond. To this day, his series of Competition Preparation Manuals are a must read for competitors in Triumph sports cars. Later in his career, Kastner directed the Nissan IMSA GTP team that won the manufacturers’ championship three years in a row and the drivers’ championship four years in a row; a remarkable achievement.  In his honor, the Kastner Cup is held each year at a different Vintage Racing event around the country and is open to all Triumphs and Triumph specials.  

All Triumph cars will be able to race in their appropriate run groups. Group 2, 3, or 8 then all together in a Feature Race. All Triumph cars will be parked in the North Paddock. 

Additionally, there will be a special Ferrari Feature Corral at the 2023 WeatherTech International Challenge with Brian Redman. Having this special Ferrari feature is a fitting tribute as Ferrari’s have raced at the fabled four-mile 14-turn circuit since the track’s inception and many notable Ferrari’s with Road America lineage will be on display. For those unaware, Carroll Shelby triumphed in a Ferrari 121LM at the first June Sprints in 1956, which is SCCA’s longest-running amateur road racing event. The event lives on, now as an SCCA Major event, the only one that carries enough tradition, history, and clout to be run as a free-standing event and not as part of a double National weekend. Road America is expecting a bevy of Ferrari’s from nearly every era of racing and will also host a special all Ferrari parade lap during the weekend with additional activities. The weekend is a can’t miss opportunity for any enthusiast.  

  • Entries postmarked, submitted online, or by fax after June 12th, 2023 will incur a late fee of $175
  • Paddock parking requests are due by June 19th, 2023
  • Final Entry due July 3rd, 2023-Any changes after July 3rd need to be made upon arrival at registration.

New Schedule-2023 62923.pdf

2023 Test Day Schedule 06/16/2023

2023 WIC Groups and Classes.pdf

2023 WIC Tire Specifications.pdf

    CLICK HERE for the PDF Event Information brochure

    CLICK HERE for the PDF Request for Entry

Note: These schedules are for planning purposes only and are subject to change at any time, so please check from time to time for updates. You will be given OFFICIAL schedule at event registration.

WARNING !!!... Please do not try to use a PROVISIONAL schedule at the event!



            Official Vehicle of Road America

Event requirements

The WeatherTech® International Challenge with Brian Redman Documents:

CLICK HERE   for the Race Groups and Classes sheet.

CLICK HERE  for the Tire Specifications sheet.

A Race Car information sheet (RCIS) is required for any car that has not been entered in The WeatherTech® International Challenge since 2018. 

  • CLICK HERE  for the blank RCIS form. This form is a writeable PDF so don't forget to SAVE it before you email it. If you have raced at the WIC within the past 5 years, you are "Good to Go" unless you have made significant changes.
  • CLICK HERE   for the blank ECF. form.  All entered cars must have a completed Engine Certificate Form (ECF) on file.  This form is a writeable PDF so don't forget to SAVE it before you email it. You can bring the ECF to tech at the event.

The completed RCIS or ECF should be emailed to Don't forget to SAVE PDF! Questions about entry requirements and classification, contact Jack Woehrle: 803-463-5388.


The Driver Emergency Medical Form should be completed and emailed to

  • CLICK HERE for the Driver Emergency Medical form.

Entries (696)

Colby Hillman
Randall Alexander
Michael Mudjer
Jerry Groose
Rees Candee
Byron DeFoor
Daniel Parr
James Hagan

Road America

Plymouth, WI
Download track map
Download track map
Watch a video tour/lap
Watch a video tour/lap
Buy track decal
Buy track decal
Buy virtual track walk
Buy virtual track walk


Vintage Racing organized by

Road America - WeatherTech International Challenge

Event over!