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2017 MTB Race Schedule

“Almost” every Wed night beginning April 19th – Aug 16th 2017:

  • April 19, 26
  • May 3, 10, 17, 24, 31
  • June 7, 14, 21, 28 (Clif Bar BBQ)
  • July 5 (No Race)
  • July 12, 19, 26
  • Aug 2, 9, 16 (Awards Party)
  • Aug 23 (No Race)




Pre-Season Cross Racing

Aug 30, Sep 6 and 13 – Scroll for details

Day of

TREK Store Southcenter technical support crew is on hand each week. 

We sell $3 Pizza slices onsite. You must pre-order with us at registration no later than 6pm. 

Each week we run some kind of sponsor promo and swag give away. Listen up at staging, your name may be called!

Race Format

Wed Night Worlds is a Short-Track style cross country mountain bike race series in Seattle. Courses are a mix of fast single track, paved roads and grass. We change up the course flow and distance week to week keeping laps at about 2-2.5mls. Approximate laps times vary from 12-18min. A typical winning time would be: Kids Race – 15/20min. Cat 4 – 30min. Cat 3 – 45min. Cat 2 – 45min. Cat 1 – 60min.

5:30pm Race

Kids (6-10yr) – 2 short laps, about 20min

6pm Race

Cat 3 (Sport) – 3 laps
Cat 4 (Beginners) – 2 laps

7pm Race
Cat 1(Expert/Elite) – 4 laps 
Cat 2( Sport/Intermediate) – 3 laps 



Within each race there are Men’s and Women’s Adult and U15 Boys and Girls Junior categories (There is no Cat 1 Junior category). Each category competes for the series overall or best 15 of 17 races. Points go 40 deep. 


Online registration: Adult $17.50, U15 Juniors $9, U10 Kids $5

Walk-up registration: Adult $20, U15 Juniors $10, U10 Kids $5

All racers need a $5 Timing Chip. This is a one time cost, you own it. Most of you probably have one already if you race Cross around here. 

What does registration pay for?

Rider insurance, park user fees, RFID timing, online registration/results, website, race numbers, toilets, our wonderful staff and park clean up/maintenance.



Seattle Mountain Bike Racing Weekly Results

Seattle Mountain Bike Racing Series Results

Wed Night ‘Pre-Season’ Cross Racing 


Run on our N SeaTac course used the last two years, we’ll combine categories for one staggered start timed race. Bring your current Timing Tubes and Wed Night bib number. Don’t have either? We’ll have them available on site(timing chip $5). Finishing racers will have overall and lap times. We will change the course week to week, mixing in more passing areas and different run/barrier sections. Don’t want to race? We’ll also have Matt Hill’s skill clinic for hands on instructional basics: Mounting, Dismounting, Barrier Running, Uphill Runs and Bike Handling.

Day of Details:

PRE-REGISTRATION ONLY. We will limit registration to 100. There will be NO WALK UP REGISTRATION. 

Click here to register


Aug 30, Sep 6, Sep 13


A Group – 6:15pm (5 laps) 

B Group 6:20pm (4 laps)

Skills Clinic 6:00pm


Adult $20 – U15 Junior $10 – Skills Clinic $15 (all)


13699 18th Ave S, SeaTac, WA 98168 –  MAP – Parking on the grass area to the right as you come inside the gate. Please pack in tight and follow our attendants instructions.


It is imperative that we all exercise patients and respect to others while racing or riding. People of varying abilities will be on course, please respect one another and be respectfully vocal when passing or being passed.


We will offer our usual $3 pizza slices. You must pre order at Registration before 6pm. Pizza is reserved for pre-orders first and walk-ups second. 

Questions please contact us

North SeaTac Park

13699 18th Ave S
SeaTac, WA 98168

Seattle's #1 Mountain Bike Race Series


News & Social Media

NW MTB Series
NW MTB Series shared NW Multisport's album.2 hours ago
Here it is, album 1 from last nights Wed Night final. Can't thank you enough Jerry G ! NW Multisport
NW MTB Series
NW MTB Series1 day ago

Ok boys girls moms dads and everyone between...It's final night! Last chance for some to grab a podium and one last party for the rest of us. #SeaTacBikeLife one more time...

We will have...
Podium Awards starting approx 7:30pm starting with Kids, slowest to fastest, on up to C1 immediately after the 7pm race finishes approx 8:10pm.

One of the closest battles is in the Cat 2 Junior Boys. It's a tie for the win but 3rd is only 10 points back. Should be interesting.
There are also some podium spots TBD in the Men's C2 and C3 races. Lets see who raises up!

Course is short and sweet, keeping lap times down. And oldie but a goodie.

Reg is open till 5:50 as usual. Remember to grab a Raffle Ticket at check in.

Lupe's Taco Truck is on site. No Pizza tonight. We recommend pre-ordering with them. Lines can back up.

We will be raffling tons of great stuff from our sponsors Trek Bicycle Store Bontrager Bontrager bicycles FULL SPEED AHEAD Voler Apparel CLIF Bar Save Our Soles Harbour Homes Western Specialty Contractors Schooner Exact Brewing Co. WD-40 BIKE
Raffle will be part of the awards ceremony. Grab a raffle ticket at Reg, put your name on both sides and drop one in the bucket. One ticket per racer. Must be present to win.

Lets do this!
See you at the park....

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