Ten racing karts. Just us.
Included · lap timing · 10:00 to 12:30, then after lunch
EO LA Track DayWillow Springs
6:30 am to 5 pm · Rosamond, CA
A private, coached day on Big Willow, in the car you already own.
Included · lap timing · 10:00 to 12:30, then after lunch
If you've been assuming a track day needs a race car, that is the one thing to un-learn. We're all using our own cars: a Taycan, a Model 3, a 911, a Civic, a Camry. Good tires, good brakes, and a quick tech check at the gate, and you're on Big Willow.
Never driven on a track? Plenty of the group hasn't either. You start with a briefing, then a coach rides with you, then the coach leads and you follow, and you push exactly as much as you want to. On the big track, in John's words, “you will never be wheel-to-wheel next to another person.”
John Soneff runs John's European Auto Service in Reseda. Through his relationship with the track's new owners he booked Big Willow, the kart circuit and the skid pad for us for the day. This is how he described it to the group, in his own words.

Open track time in your own car on Big Willow: 2.5 miles, nine turns, the oldest permanent road course in the country. Four professional racing-driver instructors plus John are there the whole day for private one-on-one coaching. “If you want someone beside you, we'll arrange it.”
With roughly 95% fewer cars than a regular track day it is an extremely private experience, with plenty of space between cars. A full flag crew, a safety team and an ambulance are on site all day.

In the middle of the day John has rented the entire Jenson Button Karting Circuit and ten professional racing karts, with instructors and lap timing. Everyone rotates through, racing wheel to wheel with the group.
“You're in a purpose-built racing kart, close to the ground, chasing the person ahead of you and trying to improve your lap time. The speeds are much lower, but the excitement may well be higher, and you get to enjoy it without worrying about putting wear on your own car.”

Low-speed car-control drills and training, in a car John brings for it. In John's words, Gary Alexander has done it and can attest that it is also a very fun experience.
“This is a full-blown private racing experience that you genuinely cannot buy. … I assure you that everyone who attends will be raving about this all year.”
John Soneff, who holds the track for us
John's own order for anyone new to this.
The morning briefing, before anyone drives.
A coach in the car with you, at a pace you choose.
The coach's car ahead of you, showing the line; you follow as fast or as slow as you like.
Low-speed slides and recoveries, in John's car.
Wheel to wheel with everyone else, in a kart built for it.
Already comfortable on a track? You're let loose on the open track right away, with advanced coaching throughout the day, however you want it.
Gates open at 6:30. Be in the briefing by 8:00 sharp.
In EO's own words, EO is subsidizing the majority of the cost; this is a fraction of what a day like this actually costs. Payments made to Ken go to the chapter after the event to cover the day. Lunch, coffee, water, the coaching and the karting are all in the price.
Willow Springs was bought in 2025 by CrossHarbor Capital Partners with Singer Vehicle Design, which has launched the Singer Drivers Club here: membership from $450,000, capped near 400. The public tracks stay open, but a whole private day on Big Willow for a group like ours is John's doing, through his relationship with the new owners.
Sign-ups here: cancel by October 25, 2026, one week before, for a full refund; after that, no refunds, because the track is paid for whether or not we show up. EO registrations follow EO's own cancellation policy. There are 50 spots.
Pay Ken ($450 per driver by Venmo or Zelle), add each driver you're bringing, agree to the terms. Three minutes on the entry form.
The person signing up, each driver's name, car, experience level and helmet need, how you paid, and whether Ken has confirmed the payment appear on the public "who's coming" list. Email and mobile stay private.
Register on the EO page, same price. You can add your spouse, partner or teen driver as guests there; EO's own cancellation policy applies. The listing may still show October 11 until EO updates it; it is the same event.
Register on EOThe standard prep every track-day organizer asks for.
Big Willow is "The Fastest Road in the West": 2.5 miles and nine turns, about 80 miles north of Los Angeles. I-5 north to CA-14 north, past Palmdale and Lancaster, exit Rosamond Blvd and go west about six miles. Plan on one to two hours, depending on where you start. Gary's take on the drive: about an hour, not a terrible commute.
Sunrise is 6:13 that morning; the gates open at 6:30. Sunset is 4:58, just as we clear the property. If you'd rather not drive in the dark, Lancaster is about 13 miles away: Wyndham Garden Lancaster, 2038 West Avenue I, (661) 405-4861, or the Hampton Inn & Suites at 2300 W Double Play Way.
Jack Olsen's corner-by-corner guide to Big Willow is the one to watch before your first time.
Watch a lapThe white Camry in the paddock photo is the idea. If the tires and brakes are good and nothing is loose inside, bring it.
Sign up, then text John about the car so he can plan for it. If a car is kept off the big track, that driver still gets the karts, the skid pad in John's car and ride-alongs with the coaches. The same goes if a car fails the morning tech check.
Taycans and Teslas are coming. Arrive at 100% and plan around the Lancaster Supercharger. John expects you to use about 50 miles of range over the day. He says there is a charger at the track; nobody has confirmed what kind, so don't count on it.
Yes. That was the group's answer. Sign both of you up as drivers, with the same car.
Fine. Plenty of the group hasn't either. John: “The day will be organized based on people's comfort and experience level. For those with less track experience, we'll begin with a structured briefing, followed by one-on-one coaching and ride-along instruction. As your confidence level and comfort grows, you will be able to push as much or as little as you'd like.” And: “If ever you want someone with you, you will have them.”
Driving hard on a track has real risk, and the terms say so. John's view of this particular day: “We have a full flag crew and safety team, and the worst thing that could happen if you push it too hard is you'll end up putting your tires in the dirt. It's a safe track.” An ambulance is on site all day, and with roughly 95% fewer cars than a normal track day, he says, “you will never be wheel-to-wheel next to another person on the track.” The karts are the wheel-to-wheel part, on purpose.
Yes, from 16 with a valid license. John to a parent in the group: “As long as she has a driver's license, she is welcome to come. I will personally work with you and her to make sure she is comfortable and has an incredible time.” Under 16s are welcome in the spectator areas only.
Assume not; most auto policies exclude track driving. Specialist providers sell single-day track insurance online if you want it. That part is on you.
EO is the Entrepreneurs' Organization; this is the Los Angeles chapter's track day, and since September it has been open to members' families and friends. There is a short EO intro at 7:45 and that is it.
Signed up here: cancel by email by October 25, 2026 for a full refund; from October 26, no refunds, because the track is paid for either way. Registered on the EO page: EO's own cancellation policy applies.
Spots are limited, so sign up early; if the day is already full when you do, Ken returns your payment.
That is why we moved from October 11. Lancaster's records show rain on only a few percent of early-November days. If anything changes, you hear from Ken by email before you drive out, and the terms say what happens to your payment.
Don't. The 8:00 safety briefing is mandatory for anyone who drives.
There is no spectator ticket yet; email Ken. Anyone who rides along or enters pit lane needs to be 16 or older, licensed and on a waiver. Under 16s stay in the spectator areas.
You sign two at check-in: the organizer's participant agreement and the track's release. Want them in advance? Text John.
Coffee and breakfast set out by 6:45, catered lunch at 12:30, water and electrolytes all day under the canopies, all included. Bring a camera; the parade lap and group photo are at 4:00. No alcohol during on-track activity.
Holds the track for us, runs the day, coaches. Anything about cars, helmets or the track.
Text (310) 633-1395Wrote the first invitation copy and has done the skid pad.
Made the flyer and the teaser video.
EO LA learning co-chair for this event. Guest sign-ups go through the entry form; payments go to him by Venmo or Zelle and on to EO Los Angeles after the event.
ken@wonderstoneusa.comFor EO Los Angeles. EO members register through the EO event page.
Sunday, November 1, 2026. Willow Springs. Your car.