Most Popular Series

Seasons 25s3 to 26s2 (4 seasons) — generated March 16, 2026 11:33 UTC

235
Series
1,496,747
Total Races
+4171.4%
Biggest Gainer
Ford Mustang Challenge by Skip Barber
-89.3%
Biggest Decliner
AMSOIL USAC Sprint Car
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 Draft Master Challenge by Simagic 40,161 71,965 22.3 ▬ -6.9%
2 Rookie Street Stock Series by Fanatec 39,732 86,428 11.7 ▼ -13.4%
3 Mini Stock Rookie Series by Thrustmaster 37,851 97,702 11.6 ▬ -8.2%
4 NASCAR Class C Series - Fixed 19,411 57,087 21.2 ▲ +78.5%
5 Rookie Legends Cup by Simshop 18,590 49,743 10.5 ▼ -17.8%
6 ARCA Menards Series 17,586 58,743 20.7 ▼ -26.9%
7 NASCAR O'Reilly Auto Parts Series - Fixed 7,558 37,980 22.3 ▲ +32.6%
8 Street Stock Series by Next Level Racing 6,496 22,515 16.0 ▼ -20.8%
9 INDYCAR Series - Oval - Fixed 6,442 19,587 18.6 ▬ -2.3%
10 CARS Tour Late Model Stocks - Fixed 5,520 21,082 13.1 ▬ 7.7%
11 NASCAR Gen 4 Cup Series 5,301 22,568 20.5 ▼ -39.5%
12 13th Week Street Stock Challenge 5,286 27,817 16.9 ▼ -33.8%
13 NASCAR Class A Series - Fixed 4,357 21,644 23.5 ▬ -2.6%
14 NASCAR Class A Series 4,124 13,955 23.0 ▬ 0.0%
15 NASCAR iRacing Class C Series 3,519 15,650 23.0 ▲ +290.1%
16 NASCAR iRacing Class B Series 3,346 12,838 22.7 ▲ +246.7%
17 NASCAR 1987 Legends Cup 3,126 13,162 18.7 ▬ -3.2%
18 CARS Tour Late Model Stocks 3,103 10,166 13.3 ▬ 7.7%
19 SK Modified Weekly Series - Fixed 2,790 11,019 11.7 ▬ 7.2%
20 Legends Cup by Go Motorsports Shop 2,351 7,151 11.9 ▲ +43.1%
21 13th Week Mini Stock Cup 2,075 9,073 12.3 —
22 13th Week NASCAR iRacing Truck Series 2,064 16,690 23.3 ▲ +39.5%
23 SK Modified Weekly Series 2,024 7,455 11.1 ▬ 6.1%
24 Jr Open Wheel Oval Challenge 1,752 5,862 10.1 ▼ -18.3%
25 Indy NXT Oval Series - Fixed 1,738 6,471 14.4 ▼ -65.4%
26 Super Late Model Series - Fixed 1,477 7,766 13.3 ▬ -5.2%
27 NASCAR Tour Modified Series - Fixed 908 4,881 12.9 ▬ 2.8%
28 13th Week ARCA Cup 860 7,016 22.0 —
29 NASCAR Tour Modified Series 657 2,883 11.9 ▼ -17.3%
30 INDYCAR Series - Fixed 530 3,659 15.2 ▼ -38.6%
31 NASCAR iRacing Series - Fixed 475 8,305 36.2 —
32 Super Late Model Series 464 2,330 10.8 ▲ +35.1%
33 NASCAR iRacing Series - Open 318 5,659 36.1 —
34 13th Week Late Model Stock Series 315 2,049 13.0 —
35 INDYCAR Series 295 1,584 13.1 ▲ +15.1%
36 Winter iRacing NASCAR Series - Fixed 252 2,243 28.1 —
37 Sprint Car Cup 229 591 13.4 ▲ +72.1%
38 Winter iRacing NASCAR Series 173 1,530 27.0 —
39 US Open Wheel D - USF 2000 Series - Fixed 159 1,056 9.9 ▼ -65.4%
40 SRX Series - Fixed 135 839 9.1 ▲ +47.6%
41 eNASCAR Coca Cola iRacing Qualifying Series 94 1,582 35.3 —
42 Silver Crown Cup 82 321 12.9 ▬ -7.4%
43 Firecracker 400 - Fixed 44 1,448 41.5 —
44 NASCAR Modified Tour 43 517 22.2 —
45 Dallara Formula iR 37 283 10.9 ▼ -68.0%
46 Super Late Model Tour 35 460 24.1 —
47 Firecracker 400 27 849 39.9 —
48 Winter Derby 26 558 27.7 —
49 iRacing MX-500 - Fixed 22 696 35.6 —
50 INDYCAR iRacing Series 22 442 25.2 —
51 Lotus 49 Grand Prix Legends 12 131 15.3 NEW
52 US Open Wheel C - Indy Pro 2000 Series 12 84 11.2 —
53 Indy NXT iRacing Series 9 139 17.6 —
54 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 14,214 36,336 9.8 ▲ +12.8%
2 DIRTcar Street Stock Rookie by IMB Racewear 13,093 33,230 9.8 ▬ 5.7%
3 DIRTcar Limited Late Model Series 9,798 18,850 11.2 ▲ +22.2%
4 DIRTcar 358 Modified Series 8,837 16,523 11.1 ▬ 8.9%
5 DIRTcar Pro Late Model Series - Fixed 8,610 17,904 12.7 ▲ +16.9%
6 Micro Non Wing Sprint Car Rookie Series 8,405 26,348 9.0 ▲ +38.6%
7 DIRTcar 305 Sprint Car Series by Fanatec 8,309 16,918 10.7 ▬ 9.1%
8 Dirt Mini Stock Rookie Series 7,680 26,228 10.5 ▲ +15.4%
9 DIRTcar Pro Late Model Series 5,734 10,908 14.2 ▬ 7.5%
10 DIRTcar UMP Modified Series - Fixed 5,537 14,683 11.9 ▬ 5.2%
11 DIRTcar 360 Sprint Car Series 4,489 9,951 12.8 ▬ -6.5%
12 World of Outlaws Late Model Series - Fixed 3,427 9,332 12.2 ▲ +14.6%
13 DIRTcar 360 Sprint Car Series - Fixed 3,141 9,845 11.2 ▬ -2.8%
14 Dirt Midget Cup 3,108 7,526 12.6 ▲ +59.9%
15 World of Outlaws Late Model Series 2,891 5,786 15.3 ▬ 6.1%
16 Dirt Midget Cup - Fixed 2,843 8,443 10.9 ▲ +136.2%
17 DIRTcar UMP Modified Series 2,367 6,541 12.2 ▬ 2.0%
18 13th Week Dirt Street Stock Challenge 2,276 10,429 11.7 ▼ -29.2%
19 Dirt Legends Cup 2,047 7,231 8.5 ▲ +108.4%
20 DIRTcar Street Stock Series 1,622 6,062 11.6 ▬ -8.0%
21 Outlaw Micro Showdown 1,503 4,726 7.7 ▲ +31.2%
22 13th Week DIRTcar Pro late Model - Fixed 1,435 6,269 15.5 ▼ -17.2%
23 World of Outlaws Sprint Car Series 1,362 3,908 12.3 ▬ -2.8%
24 SUPER DIRTcar Big Block Modified Series 1,342 3,677 13.5 ▲ +55.6%
25 World of Outlaws Sprint Car Series - Fixed 1,222 4,862 11.1 ▼ -28.0%
26 13th Week Midget Cup 1,125 4,212 11.4 ▬ 0.0%
27 SUPER DIRTcar Big Block Modified Series - Fixed 699 3,749 10.9 ▬ -8.4%
28 13th Week 358 Modified Series 390 1,502 10.8 —
29 13th Week Sprint Car Series 340 1,325 10.5 —
30 13th Week Dirt Mini Stock Challenge 328 1,602 10.1 —
31 USAC 360 Sprint Car Series 297 1,552 10.8 ▼ -64.9%
32 World of Outlaws Pro Qualifying Series 188 760 19.7 —
33 Dirt Super Late Model Tour 78 791 24.6 —
34 NASCAR Class A Series - Fixed 59 695 17.0 —
35 AMSOIL USAC Sprint Car 52 298 9.4 ▼ -89.3%
36 iRacing Chili Bowl Nationals 50 571 52.1 —
37 NASCAR Class A Series 45 349 12.9 —
38 SRX Series - Fixed 45 302 9.0 ▲ +66.7%
39 Dirt 410 Sprint Car Tour 38 396 22.7 —
40 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 23,999 50,815 6.6 ▲ +13.0%
2 FIA Cross Car Championship 14,755 27,937 7.1 —
3 VW Lite iRX Rookie Series by Trak Racer 14,692 34,847 6.7 ▼ -20.1%
4 iRX Volkswagen Beetle Lite Series by Trak Racer 4,109 9,090 7.0 ▲ +22.9%
5 Pro 4 Off-Road Series - Fixed by Trak Racer 3,677 7,052 7.9 ▲ +13.2%
6 13th Week iRacing RX Lite 2,600 9,370 8.4 ▼ -48.4%
7 Advanced Pro2 Lite Off Road Series by Trak Racer 2,396 7,178 6.9 ▲ +21.7%
8 Rallycross Series - Fixed by Trak Racer 2,241 4,180 6.6 ▲ +50.7%
9 13th Week Cross Car Cup 698 2,347 6.6 —
10 13th Week Pro 2 Lite Series 656 2,510 6.7 —
11 Rallycross Series by Trak Racer 555 1,032 5.9 ▲ +39.3%
12 Pro 2 Off-Road Series - Fixed by Trak Racer 471 1,393 6.1 ▲ +41.6%
13 13th Week iRacing Rallycross Series 419 2,829 10.0 ▼ -42.4%
14 Crandon Championship 37 308 17.4 —

Sports car

# Series Races Unique Drivers Avg Field Trend
1 Global Mazda MX-5 Cup by Fanatec 258,271 281,620 11.7 ▲ +13.0%
2 BMW M2 Cup by Nitro Concepts 99,930 191,925 11.3 ▬ 2.6%
3 Toyota GR86 Cup by SIMAGIC 65,931 163,252 18.3 ▲ +32.9%
4 GT3 Challenge Fixed by Fanatec 26,042 84,272 18.9 ▼ -39.0%
5 13th Week Mazda Cup 22,253 76,421 19.2 ▼ -27.4%
6 iRacing Porsche Cup - Fixed by CONSPIT 20,430 76,206 23.2 ▲ +145.1%
7 Ring Meister by LVRY 19,823 73,235 26.6 ▬ -1.8%
8 Production Car Challenge by Sim-Lab 18,177 113,135 36.7 ▲ +24.4%
9 iRacing GT3 Regional Tour - Americas 17,098 47,336 17.9 ▲ +21.9%
10 GT4 Challenge by Falken Tyre 16,641 84,532 27.4 ▲ +15.7%
11 GT Sprint Series by Simucube 16,586 70,474 27.4 ▼ -26.7%
12 iRacing Porsche Cup by CONSPIT 15,931 61,228 22.7 ▲ +171.8%
13 Ferrari 296 Challenge 15,210 34,048 15.5 ▼ -71.4%
14 Advanced Mazda MX-5 Cup by Heusinkveld 14,946 57,779 21.2 ▲ +86.1%
15 iRacing GT3 Regional Tour - Europe 11,322 33,495 17.0 ▲ +81.2%
16 Sports Car Challenge by Falken Tyre 10,072 67,152 34.4 ▲ +12.0%
17 IMSA iRacing Series 8,302 50,220 41.5 ▲ +23.1%
18 Spec Racer Ford Challenge 5,848 28,186 14.3 ▬ -2.1%
19 iRacing GT3 Regional Tour - Asia Pacific 5,730 21,796 15.2 ▲ +24.4%
20 LMP3 Trophy 5,464 23,760 15.5 ▲ +29.2%
21 Rain Master Challenge 5,381 24,974 13.6 ▲ +50.5%
22 Global Sports Car Challenge by Fanatec 5,310 34,754 17.3 ▲ +64.6%
23 IMSA iRacing Series - Fixed 5,302 41,893 37.3 ▲ +37.1%
24 BMW M Power Challenge 5,017 25,941 14.1 ▲ +71.3%
25 13th Week iRacing Porsche Cup 4,323 34,334 27.1 ▲ +36.1%
26 Legends Road Cup by Go Motorsports Shop 4,233 21,595 11.0 ▬ -8.3%
27 GTE Sprint Series 3,975 16,987 20.5 ▼ -15.3%
28 Prototype Challenge – Fixed 3,047 13,752 13.9 ▬ 9.8%
29 Renault Clio Cup 2,584 7,946 12.1 ▲ +53.0%
30 TCR Virtual Challenge - Fixed 2,520 11,519 13.1 ▲ +23.3%
31 LMP2 Challenge - Fixed 2,496 11,714 14.6 ▬ -9.0%
32 13th Week BMW M2 Cup 2,478 7,737 10.7 —
33 13th Week GT3 Challenge - Fixed 1,990 15,151 27.7 —
34 TCR Virtual Challenge 1,908 8,746 12.3 ▲ +87.5%
35 Ford Mustang Challenge by Skip Barber 1,880 6,934 12.7 ▲ +4171.4%
36 Radical Esports Cup 1,524 7,041 13.4 ▬ -5.4%
37 NASCAR Class C Series - Fixed 1,271 11,394 17.9 ▼ -76.0%
38 Proto-GT Challenge 980 5,206 15.1 ▼ -38.8%
39 13th Week Ferrari 296 Challenge 937 7,426 18.6 ▼ -52.9%
40 GT Endurance Series by Simucube 896 31,109 75.6 ▼ -15.4%
41 ARCA Menards Series 747 7,371 18.2 ▼ -41.7%
42 NASCAR O'Reilly Auto Parts Series - Fixed 665 6,335 19.0 ▼ -75.8%
43 Production Endurance Challenge 594 18,440 61.6 ▲ +15.9%
44 Supercars Series - Australian Server Only 589 3,024 16.5 ▲ +76.9%
45 IMSA Endurance Series 544 17,650 58.1 ▲ +136.0%
46 NASCAR Class A Series - Fixed 495 4,550 20.3 ▼ -65.3%
47 13th Week GT4 Sprint 475 4,570 21.4 —
48 Supercars Series 412 2,709 15.4 ▲ +110.5%
49 IMSA Sportscar Endurance Challenge 386 8,631 36.3 ▲ +27.8%
50 IMSA Michelin Pilot Challenge Series 386 8,241 36.6 ▬ 1.5%
51 NASCAR Class A Series 370 2,538 17.1 ▼ -59.0%
52 Porsche Mission R Challenge 319 1,653 10.3 ▲ +51.1%
53 13th Week Toyota GR86 Challenge 317 2,610 17.6 —
54 IMSA Vintage Series 280 1,939 22.9 ▲ +77.3%
55 Global Endurance Tour 270 21,554 132.9 ▲ +78.5%
56 Street Stock Series by Next Level Racing 255 2,189 13.5 ▼ -22.9%
57 13th Week Funny Forecast 223 1,507 17.6 —
58 13th Week Shiny New Shakedown 205 1,449 14.2 —
59 Roar Before the 24 159 7,641 59.1 —
60 SCCA Runoffs - GT4 141 1,638 24.4 —
61 Legends Cup by Go Motorsports Shop 138 865 9.0 ▼ -54.0%
62 Bathurst 12 Hour 107 12,475 136.7 —
63 Daytona 24 104 21,028 239.7 —
64 NASCAR Gen 4 Cup Series 104 967 12.2 ▬ 0.0%
65 6 Hours of the Glen 98 9,111 111.7 —
66 NASCAR 1987 Legends Cup 96 818 13.4 ▲ +184.2%
67 NASCAR iRacing Class C Series 66 706 16.0 ▲ +400.0%
68 24 Hours of Spa 62 12,351 233.5 —
69 SCCA Runoffs - Global MX-5 Spec Miata 62 676 18.4 —
70 Petit Le Mans 53 7,127 156.0 —
71 NASCAR iRacing Class B Series 52 624 16.3 —
72 Suzuka 1000km 49 5,764 134.2 —
73 Indy 6 Hour 44 4,836 129.4 —
74 MS Charity Race 42 2,080 58.1 —
75 THE Production Car Challenge 33 2,355 81.5 —
76 NASCAR iRacing Series - Fixed 32 908 33.8 —
77 13th Week Sebring Sunrise 32 223 9.5 —
78 SRX Series - Fixed 26 185 9.0 ▼ -78.6%
79 SCCA Runoffs - Spec Racer Ford 24 255 17.7 —
80 NASCAR iRacing Series - Open 22 587 33.2 —
81 Stock Car Brasil Series 19 108 7.5 NEW
82 Bathurst 1000 US Presented by Next Level Racing 16 850 57.8 —
83 NASCAR Tour Modified Series - Fixed 14 138 10.7 —
84 Portimao 1000km 13 1,264 110.0 —
85 Winter iRacing NASCAR Series - Fixed 12 228 25.2 —
86 NASCAR Tour Modified Series 12 97 9.8 —
87 Winter iRacing NASCAR Series 9 141 22.8 —
88 SCCA Runoffs - Renault Clio 8 76 14.8 —
89 iTested Series 6 326 57.4 —
90 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 105,018 157,451 11.4 ▼ -13.0%
2 Formula Vee Series by trophi.ai 69,389 115,807 11.0 ▼ -19.5%
3 FIA Formula 4 Challenge - Fixed 20,579 76,600 20.7 ▼ -16.2%
4 FIA F4 Esports Regional Tour - America 17,141 70,937 21.8 ▬ 6.1%
5 FIA F4 Esports Regional Tour - Europe 13,902 57,069 20.8 ▬ -1.3%
6 13th Week FF1600 Series 12,497 43,382 16.7 ▼ -30.3%
7 FIA F4 Esports Regional Tour - Asia Pacific 11,187 50,739 19.4 ▬ -9.1%
8 Motorsport UK FF 1600 Trophy by Thrustmaster 9,445 35,007 15.1 ▬ -6.9%
9 Formula C - Super Formula Lights - Fixed 6,660 29,063 21.9 ▬ -10.0%
10 Formula C - Super Formula Lights 4,880 21,127 20.0 ▬ -8.0%
11 Formula B - Super Formula Series - Fixed 4,592 14,841 18.1 ▬ 6.3%
12 Formula C - Dallara F3 Series - Fixed 4,498 22,217 19.8 ▼ -23.6%
13 Indy NXT Road Series - Fixed 3,874 11,926 16.0 ▼ -51.5%
14 Ring Meister by LVRY 3,676 19,822 24.2 ▲ +52.0%
15 Formula C - Dallara F3 Series 3,186 16,223 17.6 ▼ -19.1%
16 Formula B - Super Formula Series 3,092 10,202 16.2 ▬ -1.3%
17 Skip Barber Race Series 2,718 7,745 11.7 ▼ -18.5%
18 13th Week FIA F4 Challenge 1,265 8,980 21.2 —
19 INDYCAR Series - Fixed 907 6,314 16.4 ▼ -17.4%
20 US Open Wheel D - USF 2000 Series - Fixed 838 3,773 10.3 ▲ +42.1%
21 Lotus 79 Grand Prix Series 399 1,895 19.9 ▲ +62.3%
22 INDYCAR Series 376 2,460 13.2 ▬ -6.0%
23 13th Week Super Formula Lights Series 311 2,168 17.7 —
24 13th Week Indy NXT Challenge 143 968 12.9 —
25 Lotus 49 Grand Prix Legends 134 539 16.7 ▬ 4.9%
26 US Open Wheel C - Indy Pro 2000 Series 79 411 10.2 —
27 Formula A - Cosworth Cup Grand Prix - Fixed 74 339 10.1 NEW
28 Formula A - Grand Prix Tour 40 411 18.9 —
29 Formula A - Grand Prix Tour - Fixed 37 419 19.6 —
30 SCCA Runoffs - Formula Vee 36 275 13.9 —
31 Dallara Formula iR 31 209 8.7 ▲ +72.7%
32 INDYCAR iRacing Series 25 560 27.2 —
33 Formula A - Cosworth Cup Grand Prix 22 92 7.0 NEW
34 FF1600 Festival 19 461 48.4 —
35 SCCA Runoffs - USF2000 14 126 12.2 —
36 Indy NXT iRacing Series 13 209 18.5 —
37 INDY NXT Thrustmaster Qualifying Series 13 160 29.2 —
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