Southern California Half Marathon, 5K & 18-Mile

Saturday, January 7, 2017 • Irvine, CA • Course Map

activeregisterTake a run around the course known to locals as “inside the loop” at the Southern California Half Marathon, 5K, & 18 Miles, which celebrates its 26th annual running in 2017 as the official warm-up road race for other California races like the Los Angeles Marathon, the O.C. Marathon and the Surf City Marathon later in the year.

Following a route through the area known as the Woodbridge Loop, the Southern California Half takes runners on a mostly flat (though occasionally hilly) course through suburban neighborhoods, city park areas and along the waters of the San Diego Creek.

Runners begin their race with a starting time of 8:00 AM at the Woodbridge Village Shopping Center on Barranca Parkway and Lake Road, and follow an out-and-back course that winds along a number of city streets, including the Barranca Parkway, Valley Oak Drive, San Canyon Avenue and Laguna Canyon Road.

Along the way, runners will run past or through parks and green space areas including Valley Oak Park, Oak Creek Community Park and the Woodbridge Community Park, and will run entirely on paved surfaces (both streets and creekside trails) throughout the race.

Race organizers allow a four-hour time limit for those running in the half marathon to receive finishers’ medals and have their results counted in the race’s official statistics. For those who prefer a shorter race distance, the event also hosts a 5K run (around the neighborhood known as the “Yale loop”) and a one-mile run for children, around North Lake.

Run as a benefit for local nonprofit organizations including Reviving Baseball in Inner Cities and the local Woodbridge High School athletic program, the race has seen its popularity surge in recent years, growing from a field of about 950 runners at its inaugural running to a field of more than 5,000 runners in both races combined at its 2016 running.

Race Climate & Weather

Located about 10 miles inland from the Southern California town of Newport Beach, the city of Irvine tends to experience mild to moderately cool conditions in the mid-winter season, as well as wetter than average weather compared to most of the rest of the year.

In January, temperatures average between 41°F and 68°F, while rainfall amounts average just under 3 inches for the month. On the day of the race (Jan. 7), the average low is 41°F and the average high is 67°F.

Past Results

Course Map

See the Southern California Half Marathon course map here.

Starting Time

  • 8:00 AM – half marathon, 18 Mile, 5K
  • 10:00 AM – kids 1-mile “lake run”


  • $70 – $80 for the half marathon


To reserve your spot in the winter 2017 running of Irvine’s Southern California Half Marathon, 5K or 18-mile race, register online at by clicking here.


Official Race Website

See more races in: California, January

2 comments… add one
  • Mike February 6, 2015, 11:57 am

    This 2015 race gave out a medal that said 2014? LOL. What a joke.

  • Makayla Hobbs January 12, 2015, 6:24 pm

    The medal says 2014 instead of 2015. This is a special race for me as I ran it with my dad. Is there some way to get a medal that says 2015? Also, when I picked my bib up in Laguna Hills last wedneday, they told me that there were no goody bags, but I talked to some folks who picked theirs up on Friday, and they got goody bags. This was a real disappointment. Is there some way that I can get a goody bag? I live in Irvine and go to Irvine High. Thanks,
    Makayla Hobbs


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