The Circuit

Sonoma Raceway sits in the rolling wine country hills north of San Francisco — a 3.99-kilometre, 12-turn road course that has hosted top-tier motorsport for over five decades. The circuit rewards precision over outright speed: elevation changes of nearly 50 metres, a mix of fast sweepers and tight hairpins, and virtually no room for error on the narrow, barrier-lined layout. For a GT4 field running close together in class, Sonoma is one of the most physically and mentally demanding tracks on the calendar.

Race 1: Finding the Rhythm

Qualifying didn't go to plan. An incident left the No. 413 BMW starting ninth in the AM class and 31st overall — far from where the car belonged. But from the drop of the green flag the team went to work. A full-course caution on the opening lap compressed the field, and when racing resumed with 41 minutes remaining, Lumsden had already climbed to sixth. The crew played the strategy long, staying out while others pitted, and the No. 413 cycled up to second before making its own stop with 27 minutes to go. It was a recovery drive that proved the car's pace was there — the result just didn't fully reflect it. Random Vandals Racing took the AM win, with RAFA Racing claiming the overall victory.

Race 2: The Podium

Wilson's fastest lap in Race 1 earned the No. 413 a front-row start for Race 2, and he made the most of it. A clean opening stint kept the car in contention through the pit cycle, and when Lumsden took over he rejoined in second place. A spirited battle with the No. 21 BMW followed — close, clean racing through Sonoma's demanding corners — before the No. 413 settled into third. A late full-course caution locked the order, and Colorado Motorsport crossed the line P3 in the AM class for the team's first podium of 2026. RAFA Racing completed the overall weekend sweep.

The Weekend in Numbers

The numbers tell a story of a team that arrived ready. A P3 podium in Race 2 AM, a strong strategic recovery in Race 1, and a dominant GT America AM showing from Craig Lumsden. More importantly, Colorado Motorsport left Sonoma with solid championship points in the bag and clear evidence that the No. 413 BMW has the pace to fight at the front of the AM class. With the season stretching across nine more weekends, including the double-points Lone Star Enduro at COTA, the opening round set the right tone.

Craig Lumsden: GT America

Colorado Motorsport's campaign extended beyond GT4. Craig Lumsden lined up the No. 610 in the GT America AM class and delivered a standout performance. In Race 1, he started on the AM pole — 15th overall in a mixed field — and navigated a chaotic opening phase to break into the top ten overall, finishing an impressive P10 while holding the AM class lead throughout. Race 2 brought more of the same composure, with consistent lap times and a measured drive that underlined the depth of the Colorado Motorsport programme.

The BOMBERG Connection

BOMBERG doesn't just put a logo on a car. The brand stands alongside Colorado Motorsport because the values align — bold ambition, Swiss precision, and a refusal to settle for the middle of the pack. Every stint in the No. 413 carries the same philosophy that drives BOMBERG's watchmaking: measure everything, execute with purpose, and let the results speak. Sonoma was the first chapter of a season that promises much more.