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Race Dates

2018: Saturday, March 3, 2018
2017: Saturday, March 4, 2017

Course Information

Profile: Rolling Hills
Type: Mostly Loop
Surface: Mostly on Trails
Certified?: No

Race Day Weather

Mean Temp.: 52°F (11°C)
Average High: 64°F (17°C)
Average Low: 40° F (4°C)

PR Score & Course Score

PR Score: N/A
Course Score: N/A

Race Size

2017: 70 Finishers
2016: 68 Finishers
2015: 72 Finishers

BQ Percentages

2017: N/A
2016: N/A
2015: N/A

Miscellaneous Information

Pace Groups?: No

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Course Description

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.


Marathon Rankings

The Diamond Valley Lake Marathon was the 489th largest marathon in the U.S. last year and was the 456th largest in 2015.



Elevation Chart

No course elevation available at this time.




Ratings & Reviews: None




Finish Time Equivalent

If you ran the New York City Marathon in 4:11:00, what would your time in the Boston Marathon be?

See how your race times would compare on other marathon courses using the Marathon Time Converter Tool.