Tiger Peak Challenge

What is the REF Run?

A family-friendly 5k run/walk, out and back on the Snoqualmie Valley trail in beautiful Duvall Washington. All run participants will receive medals, t-shirts, and a stadium race cup, fillable at the event with root beer floats and more!

When? Friday June 5, 2026

5:30PM - Event begins with dunk tank and food trucks

6:30PM - Run starts

Stay for music and food afterwards

Packet pickup

June 4, at the entrance to McCormick Park from 4-6:30pm.

June 5, Day of race packet pickup is from 4-6:15pm

Deadlines

Register before May 15 to guarantee a shirt. We will do our best to provide shirts for runners who register after that date, however sizes and availability may be limited. Thank you for supporting the students at the Riverview Schools!

Please no dogs on the course. Strollers are welcome, but please be respectful of other runners for safety. This is an out and back course on a narrow trail.

The Big Backyard 5K & 10K is an annual fun run and family walk celebrating the numerous King County Parks throughout our neighborhoods, cities, and county.

Founded in 2010, proceeds from the BBY 5K benefit King County Parks, support maintenance within the parks and operations of the facilities and recreational resources to keep our parks operating and open year-round!

Since the event's inception in 2010, more than 13,000 participants have gathered to raise over $80,000 for King County Parks!

Join us at 9:00am on Sunday, June 7 at King County's Marymoor Park to have fun in YOUR BIG BACKYARD!

Welcome to the 2026 edition of the Cougar Mountain Trail Run Series, put on by Seattle Running Club and Northwest Trail Runs. Our events support King County Parks, with $15 of every entry going to KC Parks.

Events

May 9: 5.1 Miles & 10.8 Miles

9 AM start for all races, 12:00 PM cut-off (~16:40 pace for 10.8 miles)

June 13: 5K, 8.2 Miles & 14.5 Miles

9 AM start for all races, 1:00 PM cut-off (~16:35 pace for 14.5 miles)

July 11: 5K, 10.8 Miles & 19.5 Miles

9 AM start for all race, 2:30 PM cut-off (~16:55 pace for 19.5 miles)

August 8: 5K, 14.5 Miles & 26.2 Miles

8:30 AM start for the 14.5 and 26.2, 9 AM start for the 5K, 4 PM cut-off (~17:10 pace for the marathon)

October 24: 5K, 7.6 Mile Cross Country, 19.5 Miles & 50K

8 AM start for the 19.5 and 50K (7 AM early start will be available), 9 AM start for 7.6 Miles and Cross Country event, 9:30 AM start for 5K, 5 PM Cut-off (~17:25 pace for 50K, ~19:30 pace for early start)

Series (BEST 3 OUT OF 4 RACES is eligible for awards):

Short Series: May 5.1 Miles, June 8.2 Miles, July 10.8 Miles & August 14.5 Miles

Long Series: May 10.8 Miles, June 14.5 Miles, July 19.5 Miles, August 26.2 Miles

Top overall Man, Woman, and Nonbinary runners based on cumulative time will receive an award and free entry into next year's series.

If you are a Seattle Running Club member and want to use your membership discount on the short or long series, please signup for the series using the short pass or long pass and then send the race director ([email protected]) an email with your SRC member number. You will receive a partial refund within 5 business days. For all other races, please use the coupon code given to Seattle Running Club members--if you do not know the member code, please email the race director with your member number to get the code).

Online registration closes at 11:59 PM PDT the Wednesday before each event. We will have day-of registration if you did not register in time.

Reasons to Sign Up

1. Well-marked trails with distances that are perfect for all experience levels

2. Community: Surround yourself with members of the trail-running community

3. Post-race food and libations, including beer provided by one of our Club's partner stores, Flying Lion Brewery

4. Raise money for King County Parks: $15/runner donated to the parks

Safety Guidelines

If you are showing symptoms of any illness or disease, please skip this race. Email [email protected] for other race options or it's a much appreciated donation!

We Run on Native Land

We acknowledge that our running opportunities are built on the purposeful removal of Native peoples, who have been the stewards of Seattle-area lands for thousands of years. Thus, we accept our ethical responsibility for the ongoing stewardship of the land and purposeful support of Native neighbors, colleagues, businesses, and tribes. The Muckleshoot, Duwamish, Stillaguamish, Snoqualmie, and Coast Salish are the Natives of the lands we run on.

Photo Consent

I understand and accept that photos/videos/illustrations may be taken of me and/or my personal property while attending/participating in Seattle Running Club (SRC) events/functions. I acknowledge and agree that such photographs or other illustrations may be used by SRC and its related entities for advertising and promotional purposes in any medium, without compensation to me. If you would prefer not to have a particular photo used, let us know and we’ll do our best to remove it right away.

A Greener Event: Cup Free - Again, this year the series is continuing to reduce the amount of trash created during the event. We ask that runners bring a refillable water container with them on the trail to use at aid stations along the way. Our friends at Seven Hills Running, Fleet Feet Sports Seattle Ballard, and Snoqualmie Running have a variety of hydration products.

Race Information -Thanks to runners like you, the Cougar Mountain Trail Run Series has raised over $265,000+ for King County Parks and contributed hundreds of hours of trail work. Join Seattle Running Club and Northwest Trail Runs in carrying this legacy forward and making this 22nd annual event bigger and better than ever!

Just 15 minutes from Seattle, King County's Cougar Mountain Regional Wildland Park is one of the most popular training grounds for area trail runners and the Seattle Running Club. The course builds on itself throughout the series and brings runners through a lush forest of fern-lined single-track trails, over hills and along marshes and wetland habitats. This is a great series to supplement the training regime for a fall marathon or ultra. Cougar Mountain features rolling hills, a few moderate climbs, and a few steep but short inclines.

The summer Short Series and Long Series races are held on the 2nd Saturday of May, June, July, and August. The Fall races are held on the last Sunday in October. Series standings are updated after each month's races and everyone competing in each successive distance is eligible for Series awards (best 3 out of 4 races is eligible for awards!). There is a participant cap and the races tend to sell out, so register early! There are NO REFUNDS!

Seattle Running Club Discount

If you are a member of Seattle Running Club, you should have received a discount code for 20% in the newsletter. You will need to provide your member number if you use this discount code. There are also many other discounts and benefits for being a member of the Seattle Running Club.

No Dogs

As much as we love our four-legged friends and family members, we are not allowed to have dogs at our event.Very important announcement: Dogs are not allowed on the course due to Insurance Requirements. Despite the park's policy on dogs on leashes being acceptable, insurance has determined dogs on course cause a potentially unsafe environment for participants and spectators.

Awards

The top 3 Men, Women, and Nonbinary Runners in each event will receive a podium prize.

About the Fall City Day Run

35th anniversary of our race!

Beautiful, pancake flat and very fast course.

Our 5K and 10K race courses is certiffied per USATF rules (Certificate No. 5K - WA23012RMB / 10k – WA23011RMB)

Bib Chip Timed

Prizes for the top three male/female finishers in the 5Kand 10K races and refreshments following the race.

Stay in town for the parade and festival following the race.

Proceeds benefit youth of the Snoqualmie Valley

-- Courses --

The 10K and 5K races are USATF Certified courses along country roads that cross the Snoqualmie River. Race courses are VERY flat and fast, so be prepared for a personal best time. The races will be chip timed by Peak Performance Timing. Prizes will be awarded for the first three overall male and female finishers in the 5K and 10K races and there will be refreshments following the race.

The Fall City Day 10K, 5K, and Kids 1K will start and finish in the heart of downtown Fall City, Washington, which is located about 25 miles east of Seattle via I-90 and 15 miles east of Redmond via Highway 202.

The start/finish line is in front of the Farmhouse Market located at 33521 SE Redmond-Fall City Road, Fall City, WA 98024, near Olive Taylor Quigley Park, in downtown Fall City.

No dogs please (service dogs will be allowed). Walkers and strollers are welcome, however, all participants must be finished by 10:30 AM when the course closes and reopens to vehicle traffic.

-- Kids 1K --

Please note this race is for young children, typically under 8 years of age. The race starts in front of the Farmhouse Market. They run down Redmond-Fall City Road, across the bridge, around the roundabout and back to the finish line at the Farmhouse Market. Its a quick 10 minute run. Parents do not register for the race. If you feel the need to, you may run along the outside of the course by your child. For safety we ask that parents do not run inside the course and please keep younger children toward the rear of the running group.

-- Race Day Schedule --

7:00 - 8:45 AM Registration/Packet Pick Up

9:00 - Kids 1K Start

9:15 - 5K/10K Start

10:30 - Courses Close

10:45 - Awards Ceremony

11:00 - Fall City Day Parade

-- Chip Timing --

The 10K and 5K will be chip-timed by Peak Performance Timing. A disposable chip will be placed on the backside of your bib. Please be sure to wear your bib on your chest and be clearly visible. This will help ensure your tag will be read and allows us to keep track of registered participants. Also it will make it easier for the race photographer.

-- Water Stations --

Water stations will be located just prior to both the 5K and 10K turnarounds. Only water will be provided. Bananas and bagels will be provided at start/finish line.

-- Parking --

Free parking is available at Chief Kanim Middle School (32627 SE Redmond-Fall City Road, Fall City, Washington 98024) and at Fall City parks ( 4101 Fall City-Carnation Road Southeast, Fall City, WA 98024).

-- Race Beneficiaries --

All race proceeds to benefit the youth of the Snoqualmie Valley. Please help us support our youth.

-- Registration Fees --

Early Registration Entry Fees available until May 29, 2026.

5K $30.00 (Seniors 65+ $25.00)

10K $35.00 (Seniors 65+ $30.00)

Kids 1K $12.00

Race Shirts: Shirts $15.00; Please be sure to preorder your shirts. Shirts will only be available for purchase until the end of the day on May 29, 2026. Please note: Women's cut sizes run small. Please order a size larger than you would normally order.

Late Registration Entry Fee (May 30, 2026 - June 13, 2026):

5K $40.00 (Seniors 65+ $35.00)

10K $45.00 (Seniors 65+ $40.00)

Kids 1K $15.00

The online registration site will close at midnight on June 10th so that we can process registration packets. After that you can register in person the night before at Fall City Elementary School (5-8 PM) or the day of. In person registration the day of the race will close at 8:15 AM. PLEASE DO NOT WAIT UNTIL THE LAST MINUTE TO COME AND REGISTER THE DAY OF. WE MAY NOT BE ABLE TO ACCOMMODATE YOU IF THE REGISTRATION WINDOW HAS PASSED. Please note that T-Shirts will not be available unless you purchase them before the end of the day on May 29, 2026.

Sales Tax Exemption: As a 501(c)(3) non-profit organization, the Fall City Day Run fundraising event for local schools and community groups is exempt from collecting sales tax on its race entry fees.

-- In-Person Registrations --

Day Before Race (June 12, 2026) in-person registration will be available from 5 PM to 8 PM at Fall City Elementary School (33314 SE 42nd Street Fall City, Washington,98024). Please note that T-Shirts will not be available unless you purchase them during Early Registration.

Day of Race (June 13, 2026) in-person registration will be available from 7:00 AM to 8:30 AM at Olive Taylor Quigley Park, in downtown Fall City. 33512 SE Redmond-Fall City Road, Fall City, WA 98024. Please note that T-Shirts will not be available unless you purchase them during Early Registration.

--- Bag Check --

We apologize as we do not have a bag check station due to limited staffing. Please leave your valuables at home. Thank you.

--- Awards --

Prizes for the Top 3 male and female in 5K and 10K races. Overall awards are based on chip time. We kindly ask that you let the fast runners toe the start line or start near the front. Please note: awards are based on chip time, not gun time.

Finishers Medals provided for the first 500 participants in 5K and 10K races combined. Finishers Medals provided for the first 100 participants in the Kids 1K race.

-- Race Results --

You will be able to view live race results by visiting the results kiosks at the results tent at the race.

You can also access live race results from your mobile phone by visiting www.ArrowLiveResults.com

Official results website link will be posted on the main Fall City Day Run website and the top menu of the RunSignUp Results page.

-- Race Certificates --

There are finisher certificates linked to each result in RunSignUp. Participants can view and print their certificates at home or share them electronically from anywhere with email or social media.

-- Race Results App --

You can visit the android or apple store to download the free RunSignUp results app for official results.

-- Race Photos --

Race photos provided by Ross Ellingson Photography and can be viewed from the top of the RunSignUp page under the Photos tab. Please be sure to wear your bib on your chest and be clearly visible. This will help ensure your tag will be read and also to match it to your registration so you can locate your photos. You can type in your bib number and pull up all photos you were captured in. Feel free to download and share!