Beat The Blerch Seattle - Race details

Event date

August 3rd, 2019 (This race is now a one-day event, happening only on Saturday).

Event Location

King County’s Tolt MacDonald Park (link)
31020 NE 40th Street
Carnation, WA

The race starts and finishes at Tolt McDonald Park, located at 31023 NE 40th St, Carnation WA 98014.  Please do not drive to the park, unless you purchased a parking pass.  More info on parking passes below.

The Course

It begins at King County’s Tolt MacDonald Park, and it’s a beautiful flat, out-and-back gravel trail that winds its way through evergreen, mossy forests along the Snoqualmie valley trail. Please note that for both the half marathon and the 10K, participants will start in waves of about 150 to 200 people, spaced approximately 2-3 minutes apart.


Race Day Schedule

  • Packet Pickup: 7:30am to 10:00am

  • Marathon Start: 8:15am

  • Half Marathon Start: 9:30am

  • 10K Start: 10:00am

  • 5k Start: 10:15am

  • Race Course Closes: 3:15pm


5K $40

10k $55

Half marathon $80

Full marathon $110 

Race Communication

Pre-race emails will be sent out to all participants twice.

Packet pick-up

Road Runner Sports
7020 Woodlawn Ave NE
Seattle, WA 98115

Friday, August 2nd: 10:00am-7:00pm


If you did not buy a parking pass, please use one of the many free parking options outside of Tolt-McDonald Park.  The closest and largest free parking location is the Carnation off-leash dog park.  Click here to view a map of available parking locations.  Please note that you cannot come into the park without a parking pass, even to drop off runners.

Parking Pass

If you bought a parking pass when you registered, you will receive it via email one week prior to the race. You will need to print it out and place it clearly on the day of the race.

Gear Check

There is a free gear check for all participants to use.  To use the gear check, you must provide your own bag.  Beat the Blerch is not responsible for any lost, missing or stolen items.

Aid Stations

They will be stocked with water, energy bars or gels, magical flavored beverage, Nutella sandwiches, and birthday cake.  10K runners will hit the aid station once at mile 3.  Half marathon runners will hit aid stations at mile 3, 6, 7.2, and 10.1.  Marathon participants will hit the aid stations at mile 1.5, 4.3, 7.5, 10.3, 12, 15, 18, 20 and 23.


Looking for a place to stay? Here is a list of accommodations in Carnation, close to the race. If you're looking to stay closer to Seattle, we recommend staying in Issaquah or Redmond.


We need your help!  Many people choose to volunteer one day and run on the other day of this fun-filled weekend.  Many volunteer positions are available, including:

  • Pre-Race Packet Pickup

  • Aid Stations

  • Parking

  • Race Day Packet Pickup

  • Course Monitor

  • Finish Line

  • Post Race Food

  • General All Around Awesome Volunteers!

Click here to register as a volunteer.

Volunteers receive a custom Beat The Blerch shirt, lots of cake, and numerous high-fives!

Have questions?

If you have questions, please read our FAQ.