Run on the Sly Half Marathon, 12K, 20M & 50K

Sunday, August 16, 2015 • Pollock Pines, CA • Course Map

Note: This event has been permanently cancelled. The below content refers to the final event in 2015.

Set for its 7th annual running this year — and its 5th year with the half marathon distance — the Run on the Sly trail races take runners through the hills and wooded trails that surround Jenkinson Lake near the area known as Sly Park here in the foothills of Northern California’s Sierra Mountains, just over an hour’s drive east from Sacramento.

Limited to a total of 750 runners for all four races combined — including a half marathon (which actually clocks in at 13.2 miles and is limited to 300 entrants), a 50K, and a 12K and 20-mile trail race — the races take runners on an out-and back course that starts and finishes at the area known as Fresh Pond, which lies just off Highway 50 near the town of Pollock Pines, and just north of Sly Park.

From there, runners head south in the direction of Jenkinson Lake, following a route that climbs uphill to start the race but soon reaches a section where runners hit the red clay fire roads that wind through the forest, which is known for its thick canopy of pine trees, organizers note.

While all four races feature some challenging uphill and downhill stretches, the half marathon takes runners out to the area in the forest known as Five Corners, and includes a stretch along the fire roads that lead toward the lake.

All four races feature a welcome downhill finishing stretch as runners are making their way back to Fresh Pond, and the starting time for the half marathon and 12K races is scheduled for 8:30 AM, while the longer distance races (the 20-mile and 50K races) start at 7:30 AM.

Race Weather & Climate

Located along the western edge of the Eldorado National Forest in Northern California, roughly 60 miles northeast of Sacramento and about 45 miles southwest of Lake Tahoe, Pollock Pines typically sees some of its warmest and driest weather of the year in August.

On race day (Aug. 16), the average low is 59ºF and the average high is 89ºF.

Past Results

Course Map

See the race route map for the Run on the Sly Half Marathon here.

Starting Time

  • 7:30 AM – 50K, 20-mile
  • 8:30 AM – half marathon, 12K


  • $50 for the half marathon, if registered by July 31, 2015
  • $55 after July 31


To reserve your spot in the 2015 running of Pollock Pines’ Run on the Sly Trail Half Marathon, 50K, 20-mile or 12K race, register online at the event website here.

Official Race Website


Ever run in the Run on the Sly Half Marathon? Share your impressions here, or post your review in the Comments below.

See more races in: August, California

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