Race Course at Irvine Lake, Orange, CA

  • Course distance: approx. 4 miles (may vary from week to week)
  • Elevation gain per lap: 350+ feet vertical
  • Beginner, Junior Course, Sport Women: 2 laps (approx. 7.5 miles, 700+ vertical)
  • Sport, Single Speed, Super Sport Course, Elite Women: 3 laps (approx. 11 miles, 1,050+ vertical)
  • Elite Course: 4 laps (approx. 14.5 miles, 1,400+ vertical)

Weekly awards given to race winners

  • Series leader in each class will wear RokForm Leader Jersey
  • Top 30% receive  An “OTH Winner’s Pint Glass”

Results posted online each week

Release Formseach participant must sign, or have a guardian sign Release Form at check-in table or click here to print yours now

Experience the best thing that’s happened to Orange County Dirt since 2009REGISTER NOW


Stay informed on upcoming events and updates.



2015 Season Registration opens April 1st. Racing starts Tuesday May 19.

2015 Registration Options

Over The Hump 2015 Season Pass $25/race
You get a free OTH T-shirt. $299/season

*Only 150 season passes are sold each season.

Online Pre-Registration $30/race

Onsite Registration $35/race if available per race

Kids Race For Only $10 (Ages 6-11 – Online or Onsite)

*NOTE: There is a one-time $5 “Plate Fee” that covers your number plate and RFID chip for the entire season.

Top 30% of adult finishers receive an Over the Hump Pint Glass!

Additional Registration Info

  • A new number plate is required each year
  • Keep your number plate or there will be a $5 replacement fee.
  • $35 per race on-site registration only if space is available. Secure your spot today races will sell out.
  • All racers (not kids classes) will need to pay a one time $5 fee for their number plate and RFID timing tag

Race Day Schedule

  • 4:00pm- On-site Registration/check-in begins
  • 4:30pm- 5:30pm Pre-ride Course open
  • 5:30pm- Kids Race (all ages)
  • 6:00pm- Race start

*(online registration open till 7:00pm night prior to that race, otherwise register onsite starting at 4:00pm on race day)

Click here for Important Information All Racers Must Read.


We’ve been coming to Over the Hump for 5 years. The whole family races…Over the Hump defines our whole summer

-The Lundells

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Some fun facts about

Over the Hump mountain bike race

Total Participants


Total Miles

OTH news

Fill Your Garage as The Path Cleans Theirs This Weekend

The Path Bike Shop is cleaning the garage in Tustin this weekend: Saturday, March 21 and Sunday, March 22.

Read more »

OC Parks Bike Park Update and Visioning Meeting

OC Parks Bike Park Update and Visioning Meeting

Join the mountain bike and pump track dreamers of Southern California as OC Parks and the community join together to…

Read more »

OTH history


Kicked Off Our Inaugural Season

The Fire was lit.

Series, kicked off our inaugural season in 2009 with 2 races. No sponsors, no race history…just a dream to have a mid-week bike race in our backyard. That dream met a race-hungry Orange County.  We started with only two races and both sold out, with over 350 racers!

12 Week Race Series Bridges the Water at Irvine Lake

2010’s 12 race series saw 1,500 people racing. Sponsors, bike shops and friends filled the grass exhibit area next to the lake, making every night a bike race with a party.

2010’s rainy winter gave the course designers water to throw into the mix, with 100 yard land bridges and creative re-routing, as the water raised 20 feet, two weeks before race start. [See photos]


The Kids Race and the World Gets Better!

May: Linked Cycling starts the weekly Kid’s race (ages 6-11) driven by their passion for bikes and people. They wanted to see the kid’s race of 2010 happen weekly. Kids have raced every week since 2011, because Linked Cycling creates the kid’s race experience.

September: Over the Hump featured In Mountain Bike Action’s article “Over the Hump and Over the Top”The conclusion: “If every town had a Hump Race, the world would be a better place.”


Over the Hump Goes Digital

Introducing… Over the Hump, “new and improved”! We added digital chips on the race number plates, a big finish arch and lots of bells and whistles to improve each racer’s mid-week fun race experience, rarely experienced at grass roots events. Replay Timing joined our team to offer:  Quick Check in, lap times, and real time results…does it get any better?


OTH Grows the Fun!

For the first time, Over The Hump Mountain Bike Race Series™ licenses the midweek race brand, to see it grow into Los Angeles.

The vision: Reproduce, the viral phenomenon Orange County mountain bikers were living. A vision with a laser beam focus: to make mountain bike racing fun again. 


Building and building

With the help of Audi of America, Orange County Parks, TLG Paving and HDX Hydration Mix Over the Hump’s course begins to take some incredible shape.

Creativity meets creators on the course: tractor drivers, rangers and racers pick up their tools to create a re-envisioned course. New course features added berms, bumps, and layers of dirt, to add to the flavor of the Irvine Lake course.


Racing Begins: May 19

Season Highlights


Season 06

Race 01 Leaderboard

Women's Elite Standings

Joy Doe

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Kid's Standings

Tommy Doe

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Men's Sport 3 standings

Mac Doe

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Men's Sport 2 Standings

John Doe

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Men's Beginner 39 Standings

Don Doe

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Women's Beginner Standings

Jane Doe

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I volunteer and race, because Over the Hump gave me something. The sights, the sounds, the smells, the feelings of racing…they gave me back my childhood.

-Michael Nasco, Red Monkey Sports.
bike-testimonial copy

Contact Us

Produced By:
The Over the Hump Series is a
The Enthusiast Group, Inc. event.

Event Location: Irvine Lake

4621 Santiago Canyon Rd
Silverado, CA 92676

Call Us:

(949) 427-2897

Send us a message