2021 Season 3 Week 13 Series Announced

It’s almost time for Week 13! We’ve got a brand new list of both official and fun series competing as we get ready to deploy the 2021 Season 3 build.

Get a hold of our newest cars and tracks in both official and fun series, highlighted by the free-to-all Formula Vee as the highlight of the Shiny New Shakedown and the brand new Chicago Street Course in a bevy of different disciplines. The full list of series running this Week 13 is as follows:



13th Week Street Stock Challenge
NASCAR iRacing Class C Series – Fixed
NASCAR iRacing Class C Series
NASCAR iRacing Class B Series


13th Week Mazda Cup
13th Week Ferrari GT3 Challenge
13th Week Porsche Cup Series

Dirt Oval

13th Week Dirt Street Stock Challenge
13th Week DIRTcar UMP Modified Fixed

Dirt Road

13th Week iRacing Rallycross Series
13th Week iRacing Rallycross Lite

Fun Series


Pickup Cup
Dallara Dash
Carburetor Cup


13th Week Tube Frame Twister – ARCA
13th Week Battle of the Little Wings – Formula Vee, Skip Barber, USF2000, Formula Renault 2.0
13th Week Ridiculousness – Porsche LMP1, GTE, GT3, GT3 Cup, and GT4

Dirt Oval

13th Week Mudskipping – Skip Barber on Dirt Ovals

New Content and Features Series

13th Week Shiny New Shakedown – Formula Vee
13th Week iRacing SRF Challenge – Spec Racer Ford
13th Week Silly Send It – 1987 and Next-Gen Cup Series Cars
13th Week GT3 Challenge – Fixed
13th Week Music City Mayhem – Super Late Model