APRIL 6, 2024

2024 will mark the end of this world class, ultra challenging DC!

Outdoor recreation, for the purpose of facilitating physical and mental health through physically challenging outdoor exercise.

Print out and bring with you BOTH route sheets:

Part 1 – Mulholland Challenge KOM
Part 2 – DC 2nd Half

This epic double century traverses about 18,000 of vertical gain from Agoura Hills through Malibu to Camarillo and back via world famous Mulholland Highway and much more.
This route is for the adventurous cyclist who loves to climb and to see a lot of diverse terrain in the process.
A ride to remember! One of the toughest double century events in California.
This double is held in conjunction with Stage #1 of the King of the Mountains Century Challenge. 
Fully supported for the Century and then 100% self-supported for the 2nd half.

Double riders will be chip timed and will receive KOM credit for the first half.

General Information and Ride Rules – Please Read

Click here to see results from prior years.

This event is hosted quasi-brevet style: Only fully supported for KOM century option. You’re on your own, but may bring private SAG on the 2nd half. Private SAG must “register” as volunteer and sign online waiver.

This is one of the toughest doubles! Before you sign up, please consider that to be successful at this event you should have completed one or more of the toughest doubles (Terrible Two, Devil Mountain, Heartbreak) well within their respective time limits, and be willing and able to ride self-supported for the last 90+ miles.

Held in conjunction with the Mulholland Challenge, the first 106 miles are the same; so you may qualify for the King of the Mountains Century Challenge if you wish.  The second half has less climbing, looping to the coast via Latigo Canyon and back via Camarillo and Moorpark.  You may, and we do encourage you to, have private SAG meet you at the host hotel after 106 miles; and provide leap-frog style support for the duration of the event. There are no SAG drivers on the second half of the route; so you must be willing and able to finish on your own. You may be required to show “proof” that you completed every mile of the second half, by submitting your personal Strava record. When you finish, you’ll return to the host hotel lobby and sign in with your finish time. If you don’t sign in, you won’t get credit for the ride.

2024 Entry Fees *:
Until March 30: $139.
Late entry – April 1-5: Make an online reservation and pay $150 cash only at the door.

Please note: We are unable to provide a post-ride meal at this event. Please read our registration and new cancellation policies.

Entry includes chip timing with overall and age category results for the KOM portion; California Triple Crown credit for official finishers; roving SAG and fully stocked checkpoints along the KOM part of the route with water and a great selection of food and snacks; lunch at the halfway point.

* If you’re able to recruit an event volunteer to assist at an aid station or to drive SAG, please email us before signing up and we’ll give you a coupon code to use during registration for an instant 40% off.

Sign Up

Please READ THE RULES and the cancellation policy before signing up!
Use the SignUp bottom to register online and pay by credit card (which includes a small service fee). 
Until March 30th you may click here for instructions to pay by cash, Venmo or Zelle.
We highly recommend purchasing the event cancellation insurance. 

Start / Finish Location:
Hampton Inn & Suites, 30255 Agoura Road in Agoura Hills, (818) 597-0333. Please use Group Code PUB when you make your reservation. It’s vital that our host hotels know we’re using rooms so we’re invited back in the future.

If you’re not staying at the Hampton Inn, please do not park in any hotel spots. We’ve secured permission to use parking spaces in the office lot directly next door to the hotel at 30301 Agoura Rd. Please use only the spaces nearest the freeway at the back of the parking lot. Thank you for your cooperation and courtesy with the parking situation. If we don’t abide by the request of the office space owners/tenants, we’ll not be allowed to park there next year. 

Check In:
Friday from 7-8:30pm at LOCATION TBD. Saturday from 5:45-6:45am. PLEASE, if you live within thirty minutes of the start, please make every effort to check-in on Friday night.

Start Times:
6:30am:  13-18 hour riders
7am:  Under 13 hours
8am:  All riders wishing to compete for top ranked KOM Century Challenge finishes.

106-mile/Lunch Cut-Off:
You’ll be chip-timed for the Mulholland Challenge for KOM credit and must check-in and out at the “lunch” stop to receive credit for the double.
5pm on the dot is the cut-off for riders leaving the KOM finish line/lunch stop and continuing on the course. No exceptions.

Time Limit: COURSE CLOSES AT 12:30am FOR ALL RIDERS, regardless of start time.

Routing and Navigation:
Planet Ultra route sheets include lots of information to help riders navigate the course: Stop sign (SS), traffic light (TL) or T-intersection (T-int). We know that riders prefer course markings; however, many of the towns/cities/counties specifically forbid it and in some areas traffic makes it unsafe. The course will NOT be marked. We trust that as a seasoned endurance rider, you’re proficient at reading a route sheet and/or you’ve invested in a GPS based cycling computer or smart phone into which you can upload the route (and we strongly advise that you use one). Your entry fee includes access to RideWithGPS downloads for your Garmin (or other GPS devise) or your smart phone.
Please understand and take responsibility for navigation.

Route Sheets and GPS Files:
Route sheets are available in excel format to registered riders if requested via email up to 3 days before the event. We can’t guarantee that advance route sheets will be 100% accurate. Though not anticipated, last-minute routing changes may be required.

Please download a map and GPS file from Please further note the following very important caveats:

  1. A few days before the event, Planet Ultra will email an invitation to the RWGPS “event” with all routes. The links in the invitation allow you to use subscription-based functions even if you only have a free account.
  2. Never depend solely on a bike mounted GPS. Bring your route sheet, and know how to follow it. Use the RWGPS app on your smart phone as backup.
  3. GPS batteries on many “bicycle” GPS units may not last for a century. Make sure you’ve arranged for additional power.
  4. For 2024, Route from Hampton:  Click here for the 1st half of the route (same as the KOM distance for Mulholland Challenge). Click here for the 2nd half. We will send an “invite” to routes a few days before the event so you’ll have access to our Event Director functions.

Ride Description:
Be ready for a course that is as scenic as it is challenging. Spend the day riding the best of Southern California’s roads less traveled. Ride up, over, and along mountain peaks and ridges, and through a multitude of canyons and countrysides. Basically, this route is for the rider who loves to climb and to see a lot of diverse terrain in the process. It is one of the toughest double century events in California (#3 with respect to accumulated elevation gain). Bring gears! Some of the roads have steep sustained climbs of 12-14% with pitches up to 16%. Unless you’re a super strong climber, we suggest a triple crank, or at least a 30 cog in the back.

Your day starts with Stage #1 of the King of the Mountains Century Challenge:  You’ll head across Mulholland into the Valley and then hang a right on Topanga. After a fairly gentle climb and a super fast descent, the real climbing begins as you head up and over Old Topanga. Then you’ll tackle Stunt, zip down Piuma back to Mulholland; and loop back to Agoura. Bust your quads on the short but steep climb up Westlake, then enjoy the silky smooth new pavement on Yerba Buena and Cotharin, before descending to the beach via our signature descent on Deer Creek. After an easy, flat cruise back south on PCH, you’ll climb up Decker Canyon hang a right on Lechusa and climb Encinal Canyon back to Mulholland. From there it’s mostly, but not all, down hill back to Agoura. 102 amazing miles with 11,800 feet of climbing.

The second half is a whole lot easier than the first half (at least after you’ve climbed Westlake for the 2nd time).  Enjoy the smooth, fast descent down Encinal, then the flatlands on the coast out towards Oxnard, around Camarillo and returning through Moorpark and Hidden Valley. 92 miles with less than 6’000′ climbing will feel like a piece of cake after your quad-busting morning.

Twilight begins 6:00am; Twilight ends 19:51. Sunrise is 6:25: Sunset is 19:25.

Lights and Gear Drop:
Given that the last portion of the route may be ridden brevet-style there will be no gear or lights drop for this event. Of course you may leave stuff at the Hampton Inn to pick up as you come through at mile 106. If there is any chance that you’ll be out past sunset, you MUST have both a headlight and a taillight attached to your bicycle, and you MUST wear a reflective ankle band on both legs. Please do not under-estimate the time you’ll need to complete this event. Come prepared with a very good light and batteries, plus at least one non-blinking taillight and lots of reflective gear.

Personal SAG Vehicles:   Riders may have private SAG after the leave the KOM finish line.  Your private SAG must “register” as a volunteer before the event; and then may provide leapfrog support only. Absolutely NO FOLLOWING. If your personal SAG is on the course on the KOM section, you’ll be DQ’d without warning. The definition of personal SAG is any vehicle (motor or otherwise), anywhere on the route, operated by someone other than Planet Ultra staff, that is providing any type of aid, assistance, or motivation to any rider, or taking photographs, or simply out cheering. If you’re have someone who wants to be on the course on the first half of the ride, please have them contact us and join our volunteer staff.

Volunteers:  We always need volunteers! Click here for info about available positions.