| Can Am | OLI_COMPCLS_CANAM | 7 |
| Championship (Indy cars) | OLI_COMPCLS_CHAMP | 1 |
| Closed Course | OLI_COMPCLS_CLOSEDCOURSE | 101 |
| Cross country | OLI_COMPCLS_CROSSCNTRY | 201 |
| Demolition Derby | OLI_COMPCLS_DEMOLITION | 2 |
| Dirt track | OLI_COMPCLS_DRTTRK | 204 |
| Drag Racing | OLI_COMPCLS_DRGRACE | 102 |
| Drag racing-fuel powered | OLI_COMPCLS_DRFUEL | 206 |
| Drag Racing - Funny car | OLI_COMPCLS_DRFUNNYCAR | 4 |
| Drag racing-gas powered | OLI_COMPCLS_DRGAS | 205 |
| Drag Racing - Other | OLI_COMPCLS_DROTHER | 5 |
| Drag Racing - Top fuel | OLI_COMPCLS_DRTOPFUEL | 3 |
| Dune or Sand buggies | OLI_COMPCLS_DUNEBUGGY | 6 |
| Economy runs | OLI_COMPCLS_ECONORUN | 208 |
| Field meets | OLI_COMPCLS_FLDMEETS | 207 |
| Formula 1 | OLI_COMPCLS_FORM1 | 43 |
| Formula A | OLI_COMPCLS_FORMA | 48 |
| Formula Atlantic | OLI_COMPCLS_FORMATL | 51 |
| Formula B | OLI_COMPCLS_FORMB | 49 |
| Formula C | OLI_COMPCLS_FORMC | 50 |
| Formula Ford | OLI_COMPCLS_FORMFORD | 46 |
| Formula II | OLI_COMPCLS_FORMII | 44 |
| Formula other | OLI_COMPCLS_FORMOTH | 52 |
| Formula Renault | OLI_COMPCLS_FORMREN | 47 |
| Formula Vee | OLI_COMPCLS_FORMVEE | 45 |
| Go Karts | OLI_COMPCLS_GOKART | 8 |
| Hare and hound | OLI_COMPCLS_HAREHND | 202 |
| Hill climbs | OLI_COMPCLS_HILLCLMB | 209 |
| Hydrofoil | OLI_COMPCLS_HYDROFOIL | 212 |
| Hydroplanes (thunderbolts) | OLI_COMPCLS_HYDROLANE | 106 |
| Ice racing | OLI_COMPCLS_ICE | 210 |
| Midget - 3/4 or compact | OLI_COMPCLS_MIDGCMPCT | 11 |
| Midget - Full Size | OLI_COMPCLS_MIDGFULLSIZE | 9 |
| Midget - Other | OLI_COMPCLS_MIDGOTH | 12 |
| Midget - Sprint | OLI_COMPCLS_MIDGSPRINT | 10 |
| Moto-cross | OLI_COMPCLS_MOTOCROSS | 211 |
| Off Road | OLI_COMPCLS_OFFROAD | 13 |
| Off Shore (ocean) | OLI_COMPCLS_OFFSHORE | 104 |
| Other | OLI_OTHER | 2147483647 |
| Scrambles | OLI_COMPCLS_SCRAMBLES | 203 |
| Sports cars - Group7 | OLI_COMPCLS_SPTGRP7 | 14 |
| Sports cars - Other | OLI_COMPCLS_SPTOTHER | 33 |
| Sports cars - Production A | OLI_COMPCLS_SPTPRODA | 24 |
| Sports cars - Production B | OLI_COMPCLS_SPTPRODB | 25 |
| Sports cars - Production C | OLI_COMPCLS_SPTPRODC | 26 |
| Sports cars - Production D | OLI_COMPCLS_SPTPRODD | 27 |
| Sports cars - Production E | OLI_COMPCLS_SPTPRODE | 28 |
| Sports cars - Production F | OLI_COMPCLS_SPTPRODF | 29 |
| Sports cars - Production G | OLI_COMPCLS_SPTPRODG | 30 |
| Sports cars - Production H | OLI_COMPCLS_SPTPRODH | 31 |
| Sports cars - Sedan A | OLI_COMPCLS_SPTSEDA | 20 |
| Sports cars - Sedan B | OLI_COMPCLS_SPTSEDB | 21 |
| Sports cars - Sedan C | OLI_COMPCLS_SPTSEDC | 22 |
| Sports cars - Sedan D | OLI_COMPCLS_SPTSEDD | 23 |
| Sports cars - Sports A | OLI_COMPCLS_SPTSPTA | 16 |
| Sports cars - Sports B | OLI_COMPCLS_SPTSPTB | 17 |
| Sports cars - Sports C | OLI_COMPCLS_SPTSPTC | 18 |
| Sports cars - Sports D | OLI_COMPCLS_SPTSPTD | 19 |
| Sports cars - TransAm | OLI_COMPCLS_SPTTRANSAM | 15 |
| Sports cars - Vintage | OLI_COMPCLS_SPTVINT | 32 |
| Stock Cars - Amateur | OLI_COMPCLS_STKAMATEUR | 40 |
| Stock cars - Late Model - Modified | OLI_COMPCLS_STKLMMOD | 38 |
| Stock cars - Late Model Other | OLI_COMPCLS_STKLMOTH | 39 |
| Stock cars - Late Model - Sportsman | OLI_COMPCLS_STKLMSPORT | 37 |
| Stock cars - NASCAR Grand | OLI_COMPCLS_STKNASCGRD | 34 |
| Stock cars - NASCAR National | OLI_COMPCLS_STKNASCNAT | 35 |
| Stock cars - NASCAR Other | OLI_COMPCLS_STKNASCOTH | 36 |
| Stock Cars - Other | OLI_COMPCLS_STKOTH | 41 |
| Straight Away | OLI_COMPCLS_STRAIGHTAWAY | 103 |
| Time Trial Boat | OLI_COMPCLS_TIMETRL_BOAT | 107 |
| Time Trials | OLI_COMPCLS_TIMETRL | 42 |
| Unknown | OLI_UNKNOWN | 0 |
| Unlimited | OLI_COMPCLS_UNLIMITED | 105 |