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BoP Lab / Drivers / John Brown

John Brown 2 letters to Fastrack

Compare with another driver
Car
Event
Session

Against the front of the class, by track and class

TrackClassSessionsTypical gap to class bestClosest
Road America (4.05 mi)GT28+14.917s (11.35%)+12.965s (9.41%)
Barber Motorsports Park (2.38 mi)GT24+6.766s (7.56%)+6.587s (7.34%)
Mid-Ohio Sports Car Course (2.40 mi)GT24+13.183s (14.57%)+12.811s (14.37%)
Hallett Motor Racing Circuit (1.80 mi)GT210+4.915s (6.64%)+4.040s (5.25%)
Michelin Raceway Road AtlantaGT21
Michelin Raceway Road Atlanta (2.54 mi)GT25+11.838s (13.64%)+9.494s (11.00%)

Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.

Road America (4.05 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Runoffs 2026GT2 National Championship RaceGT260Porsche 991.1 GT3 Cup14/182:24.1222:10.650John Atwell+13.472s (10.31%)
Runoffs 2026GT2 Qualifying 3GT260Porsche 991.1 GT3 Cup16/182:25.2242:09.634John Atwell+15.590s (12.03%)152.414/18163.0Jack Stanford-10.6 mph (-6.5%)
Runoffs 2026GT1/GT2/T1 Qualifying 2GT260Porsche 991.1 GT3 Cup16/162:28.7652:12.366Brad McAllister+16.399s (12.39%)151.812/16162.3Jonathan Start-10.5 mph (-6.5%)
Runoffs 2026GT1/GT2/T1 Qualifying 1GT260Porsche 991.1 GT3 Cup4/43:16.8222:58.205Tony Ave+18.617s (10.45%)99.34/4117.4Tony Ave-18.1 mph (-15.4%)
Runoffs 2026Wed Grp 10 GT1 GT2 T1 Run 2GT260Porsche 991.1 GT3 Cup6/62:30.7172:17.752Lonnie Hochstetler+12.965s (9.41%)141.36/6160.7Jonathan Start-19.4 mph (-12.1%)
Runoffs 2026Tue Grp 7 GT1 GT2 STU T1 T2 AS Run 3GT260Porsche 991.1 GT3 Cup10/102:26.4002:11.483John Atwell+14.917s (11.35%)150.410/10162.3Brad McAllister-11.9 mph (-7.4%)
Runoffs 2026Tue Grp 7 GT1 GT2 STU T1 T2 AS Run 2GT260Porsche 991.1 GT3 Cup11/112:29.3492:10.832John Atwell+18.517s (14.15%)143.311/11162.3Lonnie Hochstetler-19.0 mph (-11.7%)
Runoffs 2026Tue Grp 7 GT1 GT2 STU T1 T2 AS Run 1GT260Porsche 991.1 GT3 Cup9/102:35.5202:17.909Brad McAllister+17.611s (12.77%)141.16/10158.9John Atwell-17.8 mph (-11.2%)

Barber Motorsports Park (2.38 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Alabama and Tennessee Valley Region SCCA Hoosier Super Tour @ Barber Motorsports ParkGrp 6 GT1 GT2 GTX T1 T2 AS Race 2GT260Porsche 991.1 GT3 Cup9/211:37.0531:28.663John Atwell+8.390s (9.46%)102.216/21123.3John Atwell-21.1 mph (-17.1%)
Alabama and Tennessee Valley Region SCCA Hoosier Super Tour @ Barber Motorsports ParkGrp 6 GT1 GT2 GTX T1 T2 AS Qualifying 2GT260Porsche 991.1 GT3 Cup23/201:27.886Tony Ave
Alabama and Tennessee Valley Region SCCA Hoosier Super Tour @ Barber Motorsports ParkGrp 6 GT1 GT2 GTX T1 T2 AS Race 1GT260Porsche 991.1 GT3 Cup12/251:36.3051:29.718Tony Ave+6.587s (7.34%)105.114/25130.3Tony Ave-25.2 mph (-19.4%)
Alabama and Tennessee Valley Region SCCA Hoosier Super Tour @ Barber Motorsports ParkGrp 6 GT1 GT2 GTX T1 T2 AS Qualifying 1GT260Porsche 991.1 GT3 Cup13/241:36.2091:29.443Tony Ave+6.766s (7.56%)109.98/24130.7Tony Ave-20.9 mph (-16.0%)

Mid-Ohio Sports Car Course (2.40 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Great Lakes Champions 2026Grp 5 GT1 GT2 GTX T1 T2 AS Race 2GT260Porsche 991.1 GT3 Cup8/91:43.6571:30.474Zach Arnold+13.183s (14.57%)145.17/9152.9Ray Mason-7.9 mph (-5.1%)
Great Lakes Champions 2026Grp 5 GT1 GT2 GTX T1 T2 AS Race 1GT260Porsche 991.1 GT3 Cup8/91:54.8471:36.119Tony Ave+18.728s (19.48%)144.86/9150.1Tom Patton-5.3 mph (-3.5%)
Great Lakes Champions 2026Grp 5 GT1 GT2 GTX T1 T2 AS Qual 2GT260Porsche 991.1 GT3 Cup8/81:43.7721:29.779Zach Arnold+13.993s (15.59%)146.97/8152.4Zach Arnold-5.5 mph (-3.6%)
Great Lakes Champions 2026Grp 5 GT1 GT2 GTX T1 T2 AS Qual 1GT260Porsche 991.1 GT3 Cup9/91:41.9561:29.145Tony Ave+12.811s (14.37%)146.98/9152.4Tom Patton-5.5 mph (-3.6%)

Hallett Motor Racing Circuit (1.80 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
AVRG Green Country Grand Prix 2026Grp 6 GT1 GT2 GTX T1 T2 AS Race 2GT260Porsche 9911 GT3 Cup5/101:18.9171:14.002John Atwell+4.915s (6.64%)119.74/10124.4John Atwell-4.7 mph (-3.8%)
AVRG Green Country Grand Prix 2026Grp 6 GT1 GT2 GTX T1 T2 AS Qual 2GT260Porsche 9911 GT3 Cup9/71:13.970John Atwell
AVRG Green Country Grand Prix 2026Grp 6 GT1 GT2 GTX T1 T2 AS Race 1GT260Porsche 9911 GT3 Cup7/111:33.3601:28.439Charlie Peter+4.921s (5.56%)
AVRG Green Country Grand Prix 2026Grp 6 GT1 GT2 GTX T1 T2 AS Qual 1GT260Porsche 9911 GT3 Cup8/101:19.5121:13.514John Atwell+5.998s (8.16%)126.84/9133.5Mark Kirby-6.7 mph (-5.0%)
AVRG Green Country Grand Prix 2025Grp 5 GT1 GT2 GTX T1 T2 AS Race 2GT260Porsche 991.1 GT3 Cup6/101:20.9541:16.914John Atwell+4.040s (5.25%)114.79/10124.1Mark Kirby-9.5 mph (-7.6%)
AVRG Green Country Grand Prix 2025Grp 5 GT1 GT2 GTX T1 T2 AS Race 1GT260Porsche 991.1 GT3 Cup6/131:21.3421:15.038John Atwell+6.304s (8.40%)114.410/12126.3Mark Kirby-11.9 mph (-9.4%)
AVRG Green Country Grand Prix 2025Grp 5 GT1 GT2 GTX T1 T2 AS Qual 1GT260Porsche 991.1 GT3 Cup7/131:19.8281:15.115John Atwell+4.713s (6.27%)115.111/13126.3John Atwell-11.2 mph (-8.9%)
AVRG Green Country Grand Prix 2025PM TestGT260Porsche 991.1 GT3 Cup4/91:23.8601:16.622Jorge Nazario+7.238s (9.45%)106.37/7119.7Jorge Nazario-13.3 mph (-11.2%)
AVRG Green Country Grand Prix 2023Grp 3 GT1, 2, 3, X, AS, T1 Race 2GT266Porsche 996 GT-3 CUP CAR14/101:17.599Barry Boes
AVRG Green Country Grand Prix 2023Grp 3 GT1, 2, 3, X, AS, T1 Race 1GT206Porsche 996 GT-3 CUP CAR14/142:56.9991:17.590Mark Kirby+99.409s (128.12%)

Michelin Raceway Road Atlanta

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road AtlantaGrp 8 GT1 GT2 GTX T1 T2 AS Race 2GT260Porsche 991.1 GT3 Cup16

Michelin Raceway Road Atlanta (2.54 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road AtlantaGrp 8 GT1 GT2 GTX T1 T2 AS Race 1GT260Porsche 991.1 GT3 Cup14/161:35.7821:26.288John Atwell+9.494s (11.00%)150.815/16157.6John Atwell-6.9 mph (-4.4%)
Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road AtlantaGrp 8 GT1 GT2 GTX T1 T2 AS Qual 2GT260Porsche 991.1 GT3 Cup17/171:37.7831:26.060John Atwell+11.723s (13.62%)145.917/17159.4Joseph Federl-13.4 mph (-8.4%)
Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road AtlantaGrp 8 GT1 GT2 GTX T1 T2 AS Qual 1GT260Porsche 991.1 GT3 Cup14/161:57.8631:31.639Jorge Nazario+26.224s (28.62%)111.914/16154.0Jeff Dernehl-42.0 mph (-27.3%)
Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road AtlantaGroup 3-BGT260Porsche 991.1 GT3 Cup13/141:38.6291:26.791John Atwell+11.838s (13.64%)129.713/14149.6Joseph Federl-19.9 mph (-13.3%)
Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road AtlantaGroup 3GT260Porsche 991.1 GT3 Cup8/81:40.8311:27.080John Atwell+13.751s (15.79%)

Letters to Fastrack

T1 Acceptance of Porsche 981 GT4 Clubsport into T1

#36664 from John Brown · Rule change · TB 25-05 (2025-05 Fastrack)

In T1-GT4 Spec Lines, classify Porsche 981 GT4 Clubsport as follows:

A specification table follows in the original; it is not shown here.

T1 Porsche 981 GT-4 Clubsport Info

#36631 from John Brown · Taken care of · Minutes (2025-05 Fastrack)

Thank you for your letter. Please see letter #36664 in current Fastrack.