2025-26 Round 16

Larry Rotter Memorial Grand Prix - Turtle Creek Park Raceway - West Allis, WI

Round 16 of 17

April 2, 2026

Larry Rotter Memorial Grand Prix fast facts

Race date: Thursday, Apr 2

Track: Turtle Creek Park Raceway, 2.8-mile, 9-turn natural terrain circuit, West Allis, Wisconsin

Race distance: 20 minutes

IndySlotCar Website: indyslotcar.com

2025 race winner: John Wiedemann (No. 11 FAST Honda-Daboiler)

2025 Firestone John Wiedemann (No. 11 FAST Honda-Daboiler)

Qualifying record: Larry Rotter, 3.023 seconds, 2005

Race record: Mike Lack, 311 laps, 2020

YouTube Broadcast: IndySlotCar Channel

At-track schedule (all times local):

6:00 – Gates open

6:30 – Driver introductions

7:00 – Drivers’ meeting

7:05 – IndySlotCar Series Practice

7:35 – “Open Class” cars presented for Technical Inspection

7:40 – Qualifying for Firestone P1 Award (group qualifying/ fastest single lap)

8:00 – Heat races

8:45 – Larry Rotter Memorial Grand Prix (20-minute final)

Race Notes:

·         John Wiedemann might not have Turtle Creek Park Raceway physically in his possession, but he clearly still owns this track with his fourth win at the Larry Rotter-built track, which matches the late Hall of Famers career total.

·         Wiedemann has won the last five “open class” races, both the Sweeney and Rotter Memorials in the 2023-24 and 24-25 seasons and the Sweeney earlier this season.

·         No other drivers have multiple wins besides Lack and Heitz.

·         The Husarsbilt Cup championship is coming down to a shootout between Mike Lack and Joe Heitz. Lack holds a 10 point lead over Heitz, both now have five wins on the season after Heitz took March Madness.

·         STATS WATCH: Brad Core’s appearance in the final four of March Madness makes him the 15th different driver to make an appearance in the finals. Joe Heitz moves ahead of his Good Vibes Racing teammate after being credited with a heat win at March Madness, with 38, good for 15th on the all-time list. Brad Core now has four heat wins, that equals Arnie Lueders career total, the two are tied for 28th. Core also pulls even with Lueders on Finals appearances with seven, 27th on that all-time list. Steve Rist now has as many race starts as Tony Perkins with 103, they are tied at 22nd. John Wiedeman is now tied with Mike Fitzlaff for DNFs with 43, fourth on that list.

LARRY ROTTER MEMORIAL GRAND PRIX HISTORY (23 events, 2003 – 2011, 2013 – Present)

Date                   Race Winner                    Event Name                                                    

3/16/2003        Larry Rotter                     March Madness

3/25/2004        Larry Rotter                     March Madness

3/3/2005           Larry Rotter                     Milwaukee Bucks March Madness

3/30/2006        Mark Walczak                 Milwaukee Bucks March Madness

3/29/2007        Amy Butler                       M&J March Madness

3/27/2008        Mike Fitzlaff                     M&J March Madness

10/23/2008      Mark Walczak                 Milwaukee Sporting Goods Halloween Havoc

4/1/2009           Mark Walczak                 March Madness

3/31/2010        Dan Margetta                 March Madness

3/29/2011        Mark Walczak                 March Madness

3/28/2013        Larry Rotter                     March Madness

3/27/2014        Ev Kamikawa                   March Madness

4/2/2015           John Wiedemann           Larry Rotter Memorial Grand Prix (track moved to Menomonee Falls)

3/31/2016        Mike Fitzlaff                     Larry Rotter Memorial Grand Prix

3/30/2017        Dean Strom                      Larry Rotter Memorial Grand Prix

3/29/2018        Mike Lack                         Larry Rotter Memorial Grand Prix

4/4/2019           Mike Lack                         Larry Rotter Memorial Grand Prix

3/5/2020           Mike Lack                         Larry Rotter Memorial Grand Prix

3/4/2021           John Wiedemann           Larry Rotter Memorial Grand Prix

3/3/2022           Dean Strom                      Larry Rotter Memorial Grand Prix

2/23/2023        Joe Heitz                           Larry Rotter Memorial Grand Prix

3/7/2024           John Wiedemann           Larry Rotter Memorial Grand Prix (track moved to West Allis)

3/27/2025        John Wiedemann           Larry Rotter Memorial Grand Prix

Most Wins  –  4-John Wiedemann, Larry Rotter, Mark Walczak; 3-Mike Lack; 2-Dean Strom, Mike Fitzlaff