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BoP Lab / Portland International Raceway

GT1 at Portland International Raceway

No mapOregon 2025

Track map: sectors and speed trap

Track map with timing sectors and speed trap
Shown for: Oregon 2026 (qualifying, race)
Class · click a class to switch, + to compare alongside
AS+B-Spec+EP+FE2+FF+FP+FV+GT1×GT2+GT3U+GTX+HP+P+P2+SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+
Track configuration
Events

This track has been raced on 2 configurations (19 Scoring Sidebar, 1.88 mi; 19 Scoring Sidebar, 1.97 mi). Laps on different configurations are not comparable, so only events on the 1.88 mile layout are shown; switch above to see the others.

One run is left out as not that car's own laps (far quicker than the car managed in any other session and than anyone else in its class all week; usually a swapped transponder): Tim Adolphson in Oregon 2026 Grp 4 GT1 GT2 GTX T1 T2 AS Race 2 (1:08.735; the car's best in any other session was 1:16.025 and the rest of the class's best all week 1:10.947).

PosCarDriverClass#Best lapBest theoretical lapBest qual lapBest race lapBest trap speedBest S1Best S2Best S3
1Lamborghini Huracan GT3 EvoMichael McaleenanGT131:10.947 A-Q11:10.9471:10.947 A-Q11:11.228 A-R1160.3 A-R226.874 A-Q124.281 A-Q119.792 A-Q1
2Acura NSX GT3 EVO22Xuanqian WangGT1661:12.442 A-R21:12.1621:13.918 A-Q21:12.442 A-R2158.1 A-R226.940 A-R224.959 A-R120.263 A-R2
3Dodge ChallengerJason FioritoGT1211:12.624 A-Q21:12.5081:12.624 A-Q21:12.895 A-R2168.2 A-Q227.837 A-Q224.466 A-Q220.205 A-Q2
4Jaguar XKRMichael LewisGT1121:12.879 A-R21:12.8631:13.671 A-Q21:12.879 A-R2158.5 A-R227.912 A-R224.526 A-R220.425 A-R2
5Chevrolet CamaroTim AdolphsonGT1881:16.025 A-R11:15.7401:17.968 A-Q11:16.025 A-R1156.0 A-Q129.239 A-R125.136 A-Q121.365 A-R1

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in; the fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed, marked ">" (with ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.

By car

CarClassDriversBest lapBest qualBest raceBest trapBest S1Best S2Best S3
Lamborghini Huracan GT3 EvoGT111:10.947Michael Mcaleenan1:10.947Michael Mcaleenan1:11.228Michael Mcaleenan160.3Michael Mcaleenan26.874Michael Mcaleenan24.281Michael Mcaleenan19.792Michael Mcaleenan
Acura NSX GT3 EVO22GT111:12.442Xuanqian Wang1:13.918Xuanqian Wang1:12.442Xuanqian Wang158.1Xuanqian Wang26.940Xuanqian Wang24.959Xuanqian Wang20.263Xuanqian Wang
Dodge ChallengerGT111:12.624Jason Fiorito1:12.624Jason Fiorito1:12.895Jason Fiorito168.2Jason Fiorito27.837Jason Fiorito24.466Jason Fiorito20.205Jason Fiorito
Jaguar XKRGT111:12.879Michael Lewis1:13.671Michael Lewis1:12.879Michael Lewis158.5Michael Lewis27.912Michael Lewis24.526Michael Lewis20.425Michael Lewis
Chevrolet CamaroGT111:16.025Tim Adolphson1:17.968Tim Adolphson1:16.025Tim Adolphson156.0Tim Adolphson29.239Tim Adolphson25.136Tim Adolphson21.365Tim Adolphson

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Oregon 2025 → Oregon 2026 2025-05-10 to 2026-05-09

GT1 Correction to Limited prep LS Chevy engine for GT1

#38902 from Robert Logsdon · Rule change · TB 25-09 (2025-09 Fastrack)

In GCR, Section 9.1.2. GT1 Spec Lines, GT1 Approved Automobile List, LS1 engine allowed with stock intake, make the following
change:
"LS1 Limited Prep GT1 Motor Chevy LS Limited Prep Engine including LS1, LS2, LS3 and LS6."
"Pistons: Factory or aftermarket flat top pistons only, valve reliefs allowed, coatings allowed. Maximum compression ratio
11:1."

GT1 RM 25-06 GT1 reclassify the Acura NSX GT3 EVO 22 to GT1-ST

#39101 from Club Racing Board · Rule change · TB 25-10 (2025-10 Fastrack)

IN GT1 reclassify the Acura NSX GT3 EVO 22 to GT1-ST as follows:
GT1 Approved Automobile List
Make/Model Wheelbase
ACURA
NSX GT3 EVO 22 103.5”
DOHC 4v per cylinder EFI Twin Turbo Crossflow V-6 Displacement 3500cc Bore and Stroke 91x90
MAX RPM 7500 MAX BOOST 2.1 bar Weight 3100 lbs
GT1-ST Maximum

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Displacement
Minimum
Weight Restrictor Notes
ACURA NSX GT3 EVO 22 3500cc 3100 Per FIA Homologation GT3-047

GT1 NSX Parity With Other GT3s Let Alone a GT1 Car

#39311 from Taz Harvey · Rule change · TB 26-01 (2026-01 Fastrack)

In GT1-ST, Acura NSX GT3 EVO 22, change Weight as follows:
"3100 3000"

GT1 Request for Addition of Porsche 992.1 GT3 Cup into GT1

#39322 from Erik Madsen · Rule change · TB 26-02 (2026-02 Fastrack)

In 9.1.2. GT1 Spec Lines, add the following:
"992.1 GT3 Cup (2022-2025)
OEM ABS and Traction Control allowed. Porsche OEM RSR bumper and canards allowed. Any exhaust system may be utilized."

GT1 Reduce Weight for GM 275ci Carbureted V6s

#39713 from Cameron Wagner · Rule change · TB 26-03 (2026-03 Fastrack)

In GCR, Section 9.1.2.D.E.b., V-6 - up to 275 (4.5), change as follows:
"2345 2295"

GT1 Remove GT3U from GCR as it is now in STU

#39862 from SCCA Staff · Rule change · TB 26-03 (2026-03 Fastrack)

In GCR, change as follows:
9.1.2 Page 68: "GT-3U (GT3U)"
9.1.2.F page 320: "9.1.2.F. GT-2, 3, 3U LI TE CATEGORY SPECIFICATIONS"
9.1.3.9 Page 320: "9. All GT3U (Majors and Runoffs) cars using up to 15”x7” wheels limited to 225 section width tires shall run at
current GT3 race weight plus 225lbs. All Gt3U cars shall run a DOT approved tire with a maximum section width of 245. GT3U
cars are allowed optional 15”x9” wheels with a 1.5% weight addition or up to 18”x9” wheels with a 3.0% weight addition to the
total weight including the 225 lbs. TCR cars are ineligible for GT3/GT3U.
Table B: Alternate Vehicle and Engine Allowances Page 461:

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“Increase the minimum weight of all GT3/GT3U 2.0 liter unrestricted engines to +75 lbs. All GT3 cars running in STU must meet
the minimum ride height of 3.0” for the main frame rails not including rub blocks and a 2” minimum for the front spoiler and
splitter."

What the rules allowed changed as listed; this does not say what any particular car ran.