The Diamond Valley Lake Marathon course is rolling with no major hills. Approximately six miles of the marathon is on smooth asphalt with the rest on compacted dirt access roads with some loose gravel, sand and rocks. Runners will first run a 2.5 mile out-and-back segment from the Start/Finish area in the East Marina. This will follow a westerly direction from the paved parking lot along the dirt north shore drive road. Once the course returns to the East Marina, runners will complete 21.2 mile clockwise circumnavigation of Diamond Valley lake on Lake Shore Drive.
This man-made water reserve that has served Southern California’s water needs for more than six decades and has also been the site of many paleontological fossil finds, including mammoths and mastodons whose origins date back to the Pleistocene era, which spans the time period from roughly 1.8 million years ago to about 10,000 years ago.
The Diamond Valley Lake Marathon was the 469th largest marathon in the U.S. last year and was the 472nd largest in 2014.
The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.