Five Overalls. One Blue M.

November 1988. Ensenada loop. A Chenowth Porsche that already knows this peninsula stops the clock at 13 hours, 7 minutes, and 9 seconds.

Mark McMillin. Four-wheel overall. Again.

SCORE’s all-time Baja 1000 champions table prints the line clean: McMillin, Chenowth Porsche, 13:07:09. The yearly class ledger puts him in Class 1 that year — Mark McMillin, solo on the sheet. Absolute fastest vehicle was still a motorcycle, as it often was in that era. The four-wheel argument was settled in a tube-frame buggy wearing the Big Blue M. That is the consequential moment. Everything else is how a San Diego construction family that meant to race Baja once ended up owning the 1980s overall ledger.

Honesty first, because Baja keeps two clocks and a long memory. Mark’s five four-wheel overalls — 1981, 1983, 1984, 1986, 1988 — sit on SCORE’s own champions table next to the vehicle column that matters here: Chenowth VW, Chenowth VW, Chenowth VW, Chenowth Porsche, Chenowth Porsche. Wikipedia’s winners table matches the years. ORMHOF’s Mark bio matches the five. The stopwatches and the builder name are the story. The nickname people still say out loud is Macadu — the Chenowth Mark built a career inside — but the official tables care about the time and the chassis. SCORE Journal’s June 2017 Macadu feature says Mark borrowed the name from NBA big man Bob McAdoo after his college days; the magazine’s “Macadu” spelling is the car’s, not a claim that the league printed it that way.

They did not show up as a dynasty.

ORMHOF’s Corky McMillin bio is blunt about the origin: early ’70s backyard Baja Bug trips to watch friends; 1975 pit support that went sideways; 1976, Corky borrows the friend’s Class 9 so he and Mark can say they did the SCORE Baja 1000 one time. Mark opens. The buggy flips. The power fades. Corky never even gets a stint. They DNF the bucket-list race and somehow decide that is a reason to keep going. SCORE Journal’s later Macadu feature and Mark’s ORMHOF page both treat that borrowed-car weekend as the start of McMillin Racing — not a marketing origin myth, a family that refused to quit after a bad first date with the peninsula.

Mark wins his first SCORE Baja 500 overall in 1979 in Class 9. Then the 1000 starts answering.

1981: Ensenada–Ensenada, 805 miles on the official yearly sheet, 250 starters, 85 finishers. Mark McMillin and Tom Hoke, Chenowth VW, 20:29:14 four-wheel overall. Class 2 on the ledger. First one.

1983: Ensenada–Ensenada again, 815 miles, 248 starters, 76 finishers. Mark and Ralph Paxton, Chenowth VW. SCORE’s champions table prints 20:29:14 — the same digits as 1981, a soft spot in the published record that stays printed as SCORE has it. The result that does not wobble: McMillin/Paxton take four-wheel overall in a Chenowth.

1984: Ensenada–Ensenada, 727 miles. Mark and Paxton again, Chenowth VW, 16:27:09. Faster. Cleaner. The Big Blue M is no longer a cute family entry. It is the car other Class 1 and Class 2 teams are measuring against.

1985 breaks the streak — Steve Sourapas and Dave Richardson take four-wheel overall in a Raceco VW — while Mark and Paxton still win Class 1 on the yearly sheet. Corky and Scott McMillin show up as Class 2 winners the same year. That is the family shape: not one hero seat, a paddock with shared tools and shared dirt.

1986: Ensenada–La Paz, 822 miles. Mark and Paxton, Chenowth Porsche, 18:26:28 four-wheel overall. The Porsche flat-six chapter is not folklore filler. Corky’s ORMHOF bio and SCORE’s Mark legends page both put the McMillins among the early serious Porsche 911 conversions in desert Class 1. SCORE Journal’s Macadu piece tracks the powertrain climb — VW, then Porsche, then a bigger Porsche — without needing invented dialogue. The peninsula noticed when the blue M started sounding like Stuttgart in a silt bed.

1987 belongs to Bob Gordon and Malcolm Smith in a Chenowth Porsche, 13:15:04. Mark still wins Class 1 on the yearly sheet. The overall column waits one more year.

1988: Ensenada–Ensenada, 704.5 miles, 329 starters, 163 finishers. Mark McMillin, Chenowth Porsche, 13:07:09. Fifth four-wheel overall. SCORE prints him alone in Class 1. Some secondary tables float an 18:07:09 for that same win — a full five hours off SCORE’s champions line. The champions table is the one that holds. The twist is not a Hollywood crash. The twist is a construction-company kid who borrowed a Class 9 “just once” and then put five Baja 1000 overalls on a Chenowth before the Trophy Truck age rewrote the silhouette.

Mint 400 overall in 1988. Multiple Baja 500 overalls. First father-and-son pair into ORMHOF when Mark joined Corky in 2018. Corky raced and tinkered into old age; ORMHOF records his death in September 2005 at 76, still chasing a better off-road transmission. Later generations — Scott, Andy, Jessica, Dan, Luke — kept the blue M on the entry list long after tube-frame Class 1 stopped being the default overall weapon. Mark even rolled Macadu back out for NORRA’s inaugural Mexican 1000 revival in 2010, which ORMHOF credits with helping pull vintage desert iron back into the light. That is aftermath, not the 1980s claim.

Here is why it still matters when the feed is full of AWD Trophy Trucks and factory stickers.

Baja overalls used to be won by people who built a life around a buggy and a prerun map. Mark McMillin’s five SCORE Baja 1000 four-wheel overalls — Chenowth VW to Chenowth Porsche, 1981 through 1988, capped by a 13:07:09 solo Class 1 run — are not a soft legend. They are a stopwatch streak with a builder’s name on the car. Corky meant to race once. The family kept the receipt for decades.

If your desert hero story starts with a truck or a bike, fair enough. Just remember the decade a Big Blue M Chenowth made the Baja 1000 four-wheel overall look like a family business.