| Class | Num | Driver | Hometown | Car | Sponsor | Tire | Region |
|---|---|---|---|---|---|---|---|
| AM | 1 | Marlow, Tasha | Wichita, KS | Colo | |||
| AM | 17 | Spector, Jeff | Wheat Ridge, CO | 2002 Pontiac Trans Am | Kumho | Colo | |
| AS | 99 | Heydlauff, Daniel | Colorado Springs, CO | 2004 Honda S2000 | Facilities Contracting Inc. | Hoosier | CDR |
| AS | 199 | Klingler, Bob | Colorado Springs, CO | 2004 Honda S2000 | BK Racing | Hoosier | CDR |
| BM | 66 | Brauch, Jeff | Littleton, CO | 1998 Omni-Fab CheetahSR-1 | Colorado Perf/Left Hand Racing | Hoosier | Colo |
| BM | 166 | Brauch, Evan | Littleton, CO | 1998 Omni-Fab SR-1 | CO Performance / Left Hand Racing | Hoosier | Colo |
| BS | 62 | Mauro, Mark | Evergreen, CO | 2007 Mazda RX-8 | The Culinary Group Caterers | Kumho | Colo |
| BS | 73 | Coulson, Brian | Idaho Falls, ID | 2007 Mazda RX8 | Keyline Automotive/Big O Tires | Kumho | YlSt |
| BS | 162 | Mauro, Mark | Denver, CO | 2007 Mazda RX-8 | Thanks POPS | Kumho | Colo |
| CP | 27 | Ely, Robert | Colorado Springs, CO | 1969 Ford Mustang | CDR | ||
| CSPL | 199 | Wolfskill, Kathy | Nederland, CO | 1991 Mazda Miata | Hoosier | Colo | |
| DM | 98 | Raymond, Peter | Erie, CO | 1963 Lotus seven | Hoosier | CDR | |
| DP | 125 | Baker, Paula | Magna, UT | 1994 Mazda Miata | RPMotorsports | Hoosier | Utah |
| DP | 142 | Shelton, Charles | Salt Lake City, UT | 1993 Mazda Miata | ModernSoloRacing.com | Hoosier | Utah |
| DPL | 99 | Dranow, Elizabeth | Park City, UT | 2001 Mazda Miata | ModernSoloRacing.com | Hoosier | Utah |
| DS | 48 | Craner, Cal | Idaho Falls, ID | 2008 chevy cobaltss | Newfrontiercampfire/Walleystire | Kumho | YlSt |
| DS | 59 | Michael, Kristopher | Wellington, CO | 2008 BMW 135i | CR Racing/Mauna Towers | Hoosier | Colo |
| DS | 96 | Smith, Mark | Denver, CO | 2004 Subaru WRX | SCR/Ska Brewing/Bildon/KW/SPE-ED | Hoosier | Colo |
| DS | 111 | Reindl, Kinch | Denver, CO | 1998 Acura ITR | Hoosier, Koni, I sell Traqmates | Hoosier | Colo |
| DS | 159 | Michael, Vic | Loveland, CO | 2008 BMW 135i | CR Racing/Mauna Towers | Hoosier | Colo |
| DSL | 11 | Smith, Connie | Santa Fe, NM | 2004 VW R32 | Speed Bildon | Kumho | RioG |
| DSP | 81 | Young, Doug | Westminster,CO | 1995 BMW 325is | BimmerHausPerformance | Hoosier | Colo |
| DSP | 99 | Leonard, Evan | Fort Collins, CO | 1995 BMW 325 is | Paul Leonard | Hoosier | Colo |
| DSP | 181 | Pora, Thomas | Arvada, CO | 1995 BMW 325is | BimmerHausPerformance | Hoosier | Colo |
| DSP | 199 | Leonard, Paul | Monument, CO | 1995 BMW 325is | DrivingForceMotorsports | Hoosier | CDR |
| DSPL | 181 | Pora, Melanie | Arvada, CO | 1995 BMW 325is | BimmerHausPerformance | Hoosier | Colo |
| EM | 7 | Colburn, Harlan | Littleton, CO | 1967 Corvair V-8 Roadster | Colburn Racing | Hoosier | Colo |
| EM | 199 | Tunnell, Robert | Superior, CO | 1995 BMW M3 | BarekAub.com/Hoosier/H&R | Hoosier | Colo |
| EML | 199 | Tunnell, Patty | Superior, CO | 1995 BMW M3 | BarekAub.com/Hoosier/H&R | Hoosier | Colo |
| ES | 61 | Rowley Jr, Edson | Elbert, CO | 1991 Toyota MR2 | Hoosier | CDR | |
| ES | 91 | Turner, Clay | Colorado Springs, CO | 1993 Toyota MR2 | Hoosier | CDR | |
| ES | 98 | Alabaugh II, John | Monument, CO | 1993 Toyota MR2 | Thanks Paul and Meredith! | Hoosier | CDR |
| ES | 131 | Derr, Hank | Cheyenne, WY | 1994 Mazda Miata | H&JCrossCountryRacing | Kumho | Colo |
| ES | 191 | Ott, Barry | Elizabeth, CO | 1993 Toyota MR2 | Hoosier | CDR | |
| ES | 198 | Brown, Paul | Los Alamos, NM | 1993 Toyota MR2 | IsotopeWheels,AutomotivePros,Mi | Hoosier | RioG |
| ESL | 98 | Brown, Meredith | Los Alamos, NM | 1993 Toyota MR2 | IsotopeWheels,AutomotivePros,Mi | Hoosier | RioG |
| ESP | 99 | Little, Drew | Denver, CO | 2004 Subaru WRX | DEATSCHWERKS/AWDPirates.net RacingTeam/SC-Power.com | Kumho | Colo |
| ESP | 119 | Walker, Mark | Omaha, NE | 1994 Chevrolet Camaro Z-28 | DataVoice Technologies Inc | Hoosier | Colo |
| F125L | 13 | Craner, Karen | Idaho Falls, ID | 2004 GPracing CR125 | Other | YlSt | |
| FM | 46 | Coleman, Arnold | Colorado Springs, CO | 2002 Maverick F500 | Hoosier | CDR | |
| FS | 88 | Kurowski, Shane | Erie, CO | 2007 Ford Mustang Shelby GT | 2PolesRacing/Stranoparts.com | Hoosier | Colo |
| FS | 99 | Walford, Richard | Colorado Springs, CO | 2007 Ford Shelby GT | TeamKevin/WalfordChiropractic | Hoosier | CDR |
| FS | 188 | Kurowski, Brett | Longmont, CO | 2007 Ford Mustang Shelby GT | 2PolesRacing/Stranoparts.com | Hoosier | Colo |
| FS | 199 | Youngers, Kevin | Greeley, CO | 2007 Ford Mustang GT | CRRacing/YoungersInsights | Hoosier | Colo |
| FSP | 75 | Haigler, Curtis | Colorado Springs, CO | 1985 vw golf | koman race for the cure | Hoosier | CDR |
| FSP | 99 | Wenzel, Kevin | Longmont, CO | 1968 BMW 2002 | SignEdge/PerformanceMachineWorks | Hoosier | Colo |
| FSP | 153 | Hickman, Scott | Wellington, CO | 1981 Volkswagen Scirocco | Kumho | Colo | |
| FSP | 175 | Pizzato, Alberto | Aurora, CO | 1985 VW Golf | E & J Parts / Race for The Cure | Kumho | Colo |
| FSP | 199 | Mannix, Iain | Morrison, CO | 1968 BMW 2002 | Signedge.com/PMWLTD.com | Kumho | Colo |
| HS | 89 | Bitner, Chris | Longmont, CO | 1989 Honda Civic Si | 40mpgracing | Other | Colo |
| HS | 189 | Townsend, SirVan | Arvada, CO | 1989 Honda Civic Sigh | Mycarcostlessthanyourtires. | Kumho | Colo |
| SM | 25 | Dillon, Robert | Canon City, CO | 2007 Subaru WRX STI | Oak Creek Family Practice, PC | BFGoodrich | CDR |
| SM | 42 | Faucett, Michael | Fort Collins, CO | 1996 BMW 328i | Hoosier | Colo | |
| SM | 68 | Foust, Mark | Bailey, CO | 1996 Honda Civic | Apex Racing Group | Kumho | CDR |
| SM | 91 | Moreno, Luis | El Paso, TX | 1991 Honda Civic Si | Hoosier/LGM Motorsports | Hoosier | PnAm |
| SM | 142 | Faucett, Tyler | Fort Collins, CO | 1996 BMW 328i | Hoosier | Colo | |
| SM2 | 51 | Godby, Robert | Laramie, WY | 1992 Mazda Miata | SystemStrategies.com | Hoosier | Colo |
| SM2 | 144 | Feldpusch, Michael | Broomfield, CO | 1997 Chevrolet Corvette | Dragon Race Engines,SCR Performance | Hoosier | Colo |
| SM2 | 151 | Swearingen, Chris | Colorado Springs, CO | 1992 Mazda Miata | SystemStrategies.com | Hoosier | CDR |
| SS | 59 | Lundgren, Jeff | Pleasant View, UT | 2006 Lotus Elise | autoxwiki.com | Hoosier | Colo |
| SS | 94 | Dranow, Gary | Park City, UT | 2002 Chevrolet Corvette Z06 | ModernSoloRacing.com | Hoosier | Utah |
| SS | 159 | Johnson, Ryan | Draper, UT | 2006 Lotus Elise | www.jjsons.com | Hoosier | Utah |
| STS | 73 | Baumgartner, Ryan | Denver, CO | 1989 Honda Civic Si | Other | Colo | |
| STS | 74 | Caudill, Jesse | Littleton, CO | 1989 Honda Civic si | Bridgestone | Bridgestone | CDR |
| STS2 | 42 | Leliaert, Aaron | Louisville, CO | 1993 Mazda Miata | Tri-tip Appreciation Association | Kumho | Colo |
| STS2L | 42 | Leliaert, Jennifer | Louisville, CO | 1993 Mazda Miata | Tri-tip Appreciation Association | Falken | Colo |
| STU | 26 | Johnson, Russell | Denver, CO | 2003 Mitsubishi Evolution | www.generic-racing.com | Yokohama | Colo |
| STU | 49 | Pomrenke, Jon | Salt Lake City, UT | 1999 BMW M3 | cobbtuning.com/vorshlag.com | Bridgestone | Utah |
| STU | 124 | Sizemore,Charles | San Jose,CA | 2004 Mitsubishi Evolution | Firestone Complete Auto Care | Bridgestone | RioG |
| STU | 149 | Mayfield, Christopher | Fort Collins, CO | 1997 BMW M3/4 | SCR Performance | Bridgestone | Colo |
| STX | 93 | Jobusch, David | Windsor, CO | 1995 BMW M3 | BimmerHaus/GenericRacing | Hoosier | Colo |
| STX | 178 | Brooks, Billy | Park City, UT | 2002 Subaru Impreza WRX | COBB/Crazy Money Racing/Team ARG | Utah | |
| STX | 193 | Michael, Lee | Arvada, CO | 1995 BMW 325is | BimmerHaus | Yokohama | Colo |