Most Popular Series

Seasons 25s2 to 26s1 (4 seasons) — generated March 18, 2026 05:21 UTC

250
Series
1,951,247
Total Races
+5025.7%
Biggest Gainer
Ford Mustang Challenge by Skip Barber
-83.2%
Biggest Decliner
Ferrari 296 Challenge
Jump to: Oval Dirt oval Dirt road Sports car Formula car

Top Series by Race Count

Oval

# Series Races Unique Drivers Avg Field Trend
1 Rookie Street Stock Series by Fanatec 55,782 115,570 11.6 ▼ -15.6%
2 Draft Master Challenge by Simagic 54,763 96,820 22.4 ▬ -5.5%
3 Mini Stock Rookie Series by Thrustmaster 51,120 128,067 11.4 ▬ -0.4%
4 NASCAR Class C Series - Fixed 27,976 78,213 21.3 ▬ -0.8%
5 Rookie Legends Cup by Simshop 24,957 66,099 10.3 ▬ -0.5%
6 ARCA Menards Series 24,740 79,730 20.8 ▼ -25.6%
7 NASCAR O'Reilly Auto Parts Series - Fixed 10,102 51,016 22.2 ▲ +17.6%
8 INDYCAR Series - Oval - Fixed 8,867 27,942 18.8 ▬ -4.2%
9 Street Stock Series by Next Level Racing 8,276 29,607 16.0 ▲ +11.0%
10 13th Week Street Stock Challenge 7,607 38,686 17.0 ▼ -35.0%
11 CARS Tour Late Model Stocks - Fixed 7,499 28,264 13.1 ▬ -0.2%
12 NASCAR Gen 4 Cup Series 7,259 32,686 20.6 ▼ -23.9%
13 NASCAR Class A Series - Fixed 6,610 30,854 23.8 ▼ -37.1%
14 NASCAR Class A Series 6,100 19,614 23.3 ▼ -30.8%
15 NASCAR 1987 Legends Cup 4,528 18,200 18.1 ▼ -27.9%
16 CARS Tour Late Model Stocks 4,160 13,645 13.2 ▬ 3.8%
17 SK Modified Weekly Series - Fixed 3,713 14,528 11.8 ▬ 9.2%
18 Legends Cup by Go Motorsports Shop 3,685 10,696 11.9 ▼ -29.1%
19 NASCAR iRacing Class C Series 3,576 15,835 23.0 ▲ +298.1%
20 NASCAR iRacing Class B Series 3,405 12,992 22.7 ▲ +254.6%
21 Jr Open Wheel Oval Challenge 2,730 8,684 10.3 ▼ -32.4%
22 SK Modified Weekly Series 2,702 9,871 11.2 ▬ 8.3%
23 13th Week NASCAR iRacing Truck Series 2,694 22,011 23.3 ▲ +32.9%
24 13th Week Mini Stock Cup 2,161 9,311 12.3 —
25 Super Late Model Series - Fixed 1,855 9,744 13.2 ▲ +39.2%
26 Indy NXT Oval Series - Fixed 1,738 6,471 14.4 ▼ -65.4%
27 NASCAR Tour Modified Series - Fixed 1,184 6,345 12.9 ▬ 7.6%
28 13th Week ARCA Cup 892 7,166 22.0 —
29 NASCAR Tour Modified Series 858 3,672 11.9 ▬ 0.0%
30 INDYCAR Series - Fixed 806 6,031 16.1 ▼ -55.1%
31 Super Late Model Series 592 2,942 10.6 ▲ +62.5%
32 NASCAR iRacing Series - Fixed 475 8,305 36.2 —
33 INDYCAR Series 432 2,595 14.0 ▼ -27.7%
34 13th Week Late Model Stock Series 338 2,176 13.1 —
35 NASCAR iRacing Series - Open 318 5,659 36.1 —
36 Sprint Car Cup 268 696 13.1 ▲ +169.2%
37 SRX Series - Fixed 257 1,571 9.5 ▼ -49.2%
38 Winter iRacing NASCAR Series - Fixed 252 2,243 28.1 —
39 US Open Wheel D - USF 2000 Series - Fixed 221 1,464 10.0 ▼ -56.5%
40 iRacing.com Indy 500 - Fixed 178 4,341 32.6 —
41 Winter iRacing NASCAR Series 173 1,530 27.0 —
42 iRacing.com Indy 500 115 2,709 32.3 —
43 Silver Crown Cup 110 424 12.7 ▼ -10.7%
44 eNASCAR Coca Cola iRacing Qualifying Series 109 1,679 35.2 —
45 NASCAR Modified Tour 48 576 22.5 —
46 Firecracker 400 - Fixed 44 1,448 41.5 —
47 Super Late Model Tour 40 493 24.0 —
48 Dallara Formula iR 39 298 10.7 NEW
49 US Open Wheel C - Indy Pro 2000 Series 28 190 10.5 ▼ -25.0%
50 Firecracker 400 27 849 39.9 —
51 Winter Derby 26 558 27.7 —
52 iRacing MX-500 - Fixed 22 696 35.6 —
53 INDYCAR iRacing Series 22 442 25.2 —
54 Lotus 49 Grand Prix Legends 21 224 14.5 NEW
55 Indy NXT iRacing Series 9 139 17.6 —
56 INDY NXT Thrustmaster Qualifying Series 9 132 28.0 —

Dirt oval

# Series Races Unique Drivers Avg Field Trend
1 Micro Winged Sprint Car Rookie by Thrustmaster 18,761 47,747 9.8 ▲ +20.5%
2 DIRTcar Street Stock Rookie by IMB Racewear 17,098 43,282 9.8 ▲ +19.6%
3 DIRTcar Limited Late Model Series 12,953 24,677 11.2 ▲ +20.6%
4 DIRTcar Pro Late Model Series - Fixed 11,404 23,573 12.6 ▲ +13.0%
5 DIRTcar 358 Modified Series 11,364 21,294 11.0 ▲ +25.1%
6 DIRTcar 305 Sprint Car Series by Fanatec 10,994 22,353 10.7 ▲ +14.2%
7 Micro Non Wing Sprint Car Rookie Series 10,814 34,012 8.9 ▲ +49.5%
8 Dirt Mini Stock Rookie Series 10,105 34,182 10.5 ▲ +23.3%
9 DIRTcar Pro Late Model Series 7,797 14,603 14.2 ▬ 0.7%
10 DIRTcar UMP Modified Series - Fixed 6,938 19,110 11.8 ▲ +36.3%
11 DIRTcar 360 Sprint Car Series 5,973 13,172 12.7 ▬ 5.6%
12 World of Outlaws Late Model Series - Fixed 4,375 12,256 12.2 ▲ +32.3%
13 DIRTcar 360 Sprint Car Series - Fixed 4,178 13,155 11.2 ▬ 8.8%
14 Dirt Midget Cup 4,126 9,668 12.4 ▲ +43.2%
15 World of Outlaws Late Model Series 4,008 8,003 15.4 ▬ -7.3%
16 Dirt Midget Cup - Fixed 3,791 11,039 10.8 ▲ +60.4%
17 DIRTcar UMP Modified Series 3,218 8,967 12.4 ▬ 1.1%
18 13th Week Dirt Street Stock Challenge 3,075 14,203 11.7 ▼ -21.7%
19 Dirt Legends Cup 2,522 9,071 8.5 ▲ +102.7%
20 DIRTcar Street Stock Series 2,200 8,069 11.6 ▬ -6.7%
21 Outlaw Micro Showdown 2,075 6,326 7.7 ▲ +14.0%
22 13th Week DIRTcar Pro late Model - Fixed 1,944 8,566 15.5 ▼ -12.2%
23 World of Outlaws Sprint Car Series 1,923 5,316 12.2 ▼ -31.4%
24 World of Outlaws Sprint Car Series - Fixed 1,769 6,858 11.1 ▼ -38.8%
25 SUPER DIRTcar Big Block Modified Series 1,757 4,783 13.5 ▲ +38.3%
26 13th Week Midget Cup 1,552 5,660 11.3 ▼ -15.3%
27 SUPER DIRTcar Big Block Modified Series - Fixed 1,024 5,232 11.0 ▼ -32.6%
28 13th Week 358 Modified Series 417 1,564 10.9 —
29 USAC 360 Sprint Car Series 398 2,070 10.7 ▼ -48.5%
30 13th Week Sprint Car Series 354 1,351 10.4 —
31 13th Week Dirt Mini Stock Challenge 350 1,667 10.1 —
32 World of Outlaws Pro Qualifying Series 188 760 19.7 —
33 Dirt Super Late Model Tour 81 830 24.6 —
34 NASCAR Gen 4 Cup Series 78 833 14.0 —
35 AMSOIL USAC Sprint Car 69 425 9.5 ▼ -82.4%
36 SRX Series - Fixed 66 436 8.7 ▬ -4.8%
37 NASCAR Class A Series - Fixed 59 695 17.0 —
38 iRacing Chili Bowl Nationals 50 571 52.1 —
39 NASCAR Class A Series 45 349 12.9 —
40 Dirt 410 Sprint Car Tour 41 430 23.2 —
41 iRacing Knoxville Nationals 32 464 53.1 —

Dirt road

# Series Races Unique Drivers Avg Field Trend
1 Pro 2 Lite Off-Road Rookie Series by Trak Racer 30,646 64,787 6.5 ▲ +36.3%
2 VW Lite iRX Rookie Series by Trak Racer 19,157 44,879 6.7 ▬ -3.8%
3 FIA Cross Car Championship 14,755 27,937 7.1 —
4 iRX Volkswagen Beetle Lite Series by Trak Racer 5,512 11,712 6.9 ▲ +11.1%
5 Pro 4 Off-Road Series - Fixed by Trak Racer 4,849 9,299 7.9 ▲ +17.2%
6 13th Week iRacing RX Lite 3,415 12,335 8.4 ▼ -24.8%
7 Rallycross Series - Fixed by Trak Racer 2,863 5,352 6.5 ▲ +54.3%
8 Advanced Pro2 Lite Off Road Series by Trak Racer 2,396 7,178 6.9 ▲ +21.7%
9 Rallycross Series by Trak Racer 748 1,360 5.9 ▲ +21.2%
10 13th Week Cross Car Cup 739 2,467 6.6 —
11 13th Week Pro 2 Lite Series 694 2,631 6.8 —
12 Pro 2 Off-Road Series - Fixed by Trak Racer 614 1,773 6.1 ▲ +23.8%
13 13th Week iRacing Rallycross Series 530 3,559 10.0 ▼ -27.9%
14 Crandon Championship 37 308 17.4 —
15 Pro 4 Off Road Racing Series 10 45 5.4 —
16 Pro 2 Off Road Racing Series 2 9 4.5 —

Sports car

# Series Races Unique Drivers Avg Field Trend
1 Global Mazda MX-5 Cup by Fanatec 336,151 357,601 11.7 ▲ +22.2%
2 BMW M2 Cup by Nitro Concepts 127,763 240,332 11.1 ▲ +25.2%
3 Toyota GR86 Cup by SIMAGIC 76,686 198,344 18.0 ▲ +136.1%
4 GT3 Challenge Fixed by Fanatec 35,097 111,365 18.9 ▼ -27.3%
5 Ferrari 296 Challenge 32,135 69,580 16.7 ▼ -83.2%
6 13th Week Mazda Cup 28,517 98,921 19.2 ▬ -2.2%
7 iRacing Porsche Cup - Fixed by CONSPIT 25,629 96,184 23.1 ▲ +126.3%
8 Ring Meister by LVRY 24,996 91,942 26.4 ▲ +29.4%
9 Production Car Challenge by Sim-Lab 21,871 136,728 35.6 ▲ +95.7%
10 GT Sprint Series by Simucube 21,839 92,184 27.4 ▬ -9.5%
11 GT4 Challenge by Falken Tyre 20,712 106,212 27.2 ▲ +42.6%
12 iRacing Porsche Cup by CONSPIT 19,858 76,626 22.6 ▲ +141.2%
13 Advanced Mazda MX-5 Cup by Heusinkveld 18,160 70,261 20.9 ▲ +127.2%
14 iRacing GT3 Regional Tour - Americas 17,098 47,336 17.9 ▲ +21.9%
15 Sports Car Challenge by Falken Tyre 12,943 85,792 34.2 ▲ +24.1%
16 iRacing GT3 Regional Tour - Europe 11,322 33,495 17.0 ▲ +81.2%
17 IMSA iRacing Series 10,909 65,783 41.4 ▲ +13.6%
18 LMP3 Trophy 7,125 30,597 15.5 ▲ +25.0%
19 IMSA iRacing Series - Fixed 6,747 53,419 36.8 ▲ +37.5%
20 Spec Racer Ford Challenge 6,728 32,793 14.1 ▲ +111.6%
21 Legends Road Cup by Go Motorsports Shop 6,575 31,291 11.2 ▼ -42.6%
22 BMW M Power Challenge 6,473 33,297 13.9 ▲ +77.8%
23 Global Sports Car Challenge by Fanatec 6,341 41,874 17.2 ▲ +95.9%
24 Rain Master Challenge 6,308 29,575 13.3 ▲ +166.9%
25 iRacing GT3 Regional Tour - Asia Pacific 5,730 21,796 15.2 ▲ +24.4%
26 GTE Sprint Series 5,270 22,660 20.4 ▬ -3.3%
27 13th Week iRacing Porsche Cup 5,212 41,038 26.7 ▲ +62.6%
28 Prototype Challenge – Fixed 4,790 20,369 14.5 ▼ -37.6%
29 TCR Virtual Challenge - Fixed 3,397 15,439 13.2 ▬ 8.7%
30 Renault Clio Cup 3,378 10,494 12.0 ▲ +62.1%
31 13th Week BMW M2 Cup 2,606 8,004 10.7 —
32 TCR Virtual Challenge 2,503 11,372 12.3 ▲ +33.9%
33 LMP2 Challenge - Fixed 2,496 11,714 14.6 ▬ -9.0%
34 Radical Esports Cup 2,207 9,772 13.6 ▼ -28.1%
35 13th Week GT3 Challenge - Fixed 2,114 15,607 27.8 —
36 Ford Mustang Challenge by Skip Barber 1,915 7,106 12.6 ▲ +5025.7%
37 13th Week Ferrari 296 Challenge 1,560 12,195 20.5 ▼ -65.7%
38 Proto-GT Challenge 1,383 7,253 15.1 ▼ -36.2%
39 NASCAR Class C Series - Fixed 1,271 11,394 17.9 ▼ -76.0%
40 GT Endurance Series by Simucube 1,160 39,719 75.9 ▬ 4.2%
41 ARCA Menards Series 1,143 11,129 18.6 ▼ -46.7%
42 Supercars Series - Australian Server Only 750 3,826 16.2 ▲ +28.6%
43 IMSA Endurance Series 676 21,912 57.7 ▲ +123.5%
44 NASCAR O'Reilly Auto Parts Series - Fixed 665 6,335 19.0 ▼ -75.8%
45 Production Endurance Challenge 594 18,440 61.6 ▲ +15.9%
46 13th Week GT4 Sprint 557 5,393 22.2 —
47 IMSA Michelin Pilot Challenge Series 546 11,540 36.6 ▼ -14.4%
48 Supercars Series 539 3,488 15.1 ▲ +26.0%
49 NASCAR Class A Series - Fixed 495 4,550 20.3 ▼ -65.3%
50 Nurburgring Endurance Championship 492 15,465 86.3 —
51 IMSA Sportscar Endurance Challenge 483 10,651 36.1 ▲ +42.3%
52 IMSA Vintage Series 418 3,072 23.2 ▬ -3.6%
53 NASCAR Class A Series 370 2,538 17.1 ▼ -59.0%
54 Global Endurance Tour 351 26,441 125.5 ▲ +43.2%
55 Porsche Mission R Challenge 349 1,798 10.3 ▲ +353.3%
56 13th Week Toyota GR86 Challenge 332 2,697 17.6 —
57 Street Stock Series by Next Level Racing 255 2,189 13.5 ▼ -22.9%
58 13th Week Funny Forecast 238 1,561 17.7 —
59 13th Week Shiny New Shakedown 206 1,452 14.1 —
60 Legends Cup by Go Motorsports Shop 191 1,214 9.1 ▼ -45.3%
61 Roar Before the 24 159 7,641 59.1 —
62 NASCAR Gen 4 Cup Series 142 1,259 11.5 ▲ +36.8%
63 SCCA Runoffs - GT4 141 1,638 24.4 —
64 Racing Prodigy Radical SR8 Cup 126 274 15.8 —
65 Bathurst 12 Hour 107 12,475 136.7 —
66 Daytona 24 104 21,028 239.7 —
67 6 Hours of the Glen 98 9,111 111.7 —
68 NASCAR 1987 Legends Cup 96 818 13.4 ▲ +184.2%
69 12 Hours of Sebring 84 12,554 168.6 —
70 NASCAR iRacing Class C Series 66 706 16.0 ▲ +400.0%
71 24 Hours of Spa 62 12,351 233.5 —
72 SCCA Runoffs - Global MX-5 Spec Miata 62 676 18.4 —
73 Petit Le Mans 53 7,127 156.0 —
74 NASCAR iRacing Class B Series 52 624 16.3 —
75 Suzuka 1000km 49 5,764 134.2 —
76 24 Hours of Nurburgring 45 9,091 233.4 —
77 Indy 6 Hour 44 4,836 129.4 —
78 MS Charity Race 42 2,080 58.1 —
79 13th Week Touring Car Challenge 38 228 8.7 —
80 Creventic Endurance Series 33 4,172 159.3 —
81 THE Production Car Challenge 33 2,355 81.5 —
82 Stock Car Brasil Series 33 140 8.1 ▼ -42.9%
83 NASCAR iRacing Series - Fixed 32 908 33.8 —
84 13th Week Sebring Sunrise 32 223 9.5 —
85 Road America 500 26 1,440 65.6 —
86 SRX Series - Fixed 26 185 9.0 ▼ -78.6%
87 SCCA Runoffs - Spec Racer Ford 24 255 17.7 —
88 NASCAR iRacing Series - Open 22 587 33.2 —
89 Bathurst 1000 US Presented by Next Level Racing 16 850 57.8 —
90 NASCAR Tour Modified Series - Fixed 14 138 10.7 —
91 Portimao 1000km 13 1,264 110.0 —
92 4 Hours at Thruxton 12 744 71.3 —
93 Winter iRacing NASCAR Series - Fixed 12 228 25.2 —
94 NASCAR Tour Modified Series 12 97 9.8 —
95 Winter iRacing NASCAR Series 9 141 22.8 —
96 SCCA Runoffs - Renault Clio 8 76 14.8 —
97 iTested Series 6 326 57.4 —
98 Bathurst 1000 AU Presented by Next Level Racing 4 232 58.0 —

Formula car

# Series Races Unique Drivers Avg Field Trend
1 Formula 1600 Rookie Series by Asetek 142,095 202,921 11.2 ▬ -7.7%
2 Formula Vee Series by trophi.ai 90,932 144,977 10.8 ▬ 1.3%
3 FIA Formula 4 Challenge - Fixed 30,365 103,666 20.3 ▼ -35.2%
4 FIA F4 Esports Regional Tour - America 22,879 90,704 21.2 ▬ 7.7%
5 FIA F4 Esports Regional Tour - Europe 18,561 71,915 20.1 ▬ 0.8%
6 13th Week FF1600 Series 16,385 56,958 16.7 ▬ -8.3%
7 FIA F4 Esports Regional Tour - Asia Pacific 14,716 62,740 18.5 ▬ 4.4%
8 Motorsport UK FF 1600 Trophy by Thrustmaster 10,851 40,967 14.9 ▲ +114.9%
9 Formula C - Super Formula Lights - Fixed 8,915 38,741 22.0 ▬ -0.8%
10 Formula C - Super Formula Lights 6,455 28,016 20.1 ▬ 5.0%
11 Formula C - Dallara F3 Series - Fixed 6,240 30,373 20.0 ▼ -23.1%
12 Formula B - Super Formula Series - Fixed 5,986 19,424 17.9 ▲ +19.1%
13 Ring Meister by LVRY 4,727 26,821 24.4 ▲ +37.4%
14 Formula C - Dallara F3 Series 4,399 22,130 17.8 ▼ -19.5%
15 Formula B - Super Formula Series 4,047 13,335 16.1 ▲ +12.3%
16 Indy NXT Road Series - Fixed 3,874 11,926 16.0 ▼ -51.5%
17 Skip Barber Race Series 3,703 10,216 11.7 ▼ -23.2%
18 13th Week FIA F4 Challenge 1,322 9,197 21.2 —
19 INDYCAR Series - Fixed 1,311 8,858 16.6 ▼ -19.1%
20 US Open Wheel D - USF 2000 Series - Fixed 1,091 4,997 10.5 ▲ +52.2%
21 Lotus 79 Grand Prix Series 572 2,717 19.4 ▬ 6.9%
22 INDYCAR Series 547 3,428 13.0 ▼ -17.0%
23 13th Week Super Formula Lights Series 333 2,270 17.7 —
24 Lotus 49 Grand Prix Legends 185 721 16.7 ▼ -15.7%
25 13th Week Indy NXT Challenge 153 1,035 13.0 —
26 US Open Wheel C - Indy Pro 2000 Series 145 770 10.2 ▲ +19.7%
27 Vintage Grand Prix Tour 98 572 17.4 —
28 Formula A - Cosworth Cup Grand Prix - Fixed 76 353 10.0 NEW
29 Dallara Formula iR 48 300 8.5 ▲ +11.8%
30 Formula A - Grand Prix Tour 40 411 18.9 —
31 Formula A - Grand Prix Tour - Fixed 37 419 19.6 —
32 SCCA Runoffs - Formula Vee 36 275 13.9 —
33 INDYCAR iRacing Series 25 560 27.2 —
34 Formula A - Cosworth Cup Grand Prix 25 109 7.0 NEW
35 FF1600 Festival 19 461 48.4 —
36 SCCA Runoffs - USF2000 14 126 12.2 —
37 Indy NXT iRacing Series 13 209 18.5 —
38 INDY NXT Thrustmaster Qualifying Series 13 160 29.2 —
39 Silver Crown Cup 1 17 17.0 —
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