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Race Info

2017 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)




Cross Racing: Aug 30, Sep 6 and 13 – Details coming…

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!

We try to set up a Kiddie strider course for the little ones. Mom’s and Dad’s need to self monitor their children.


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

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 added 3 new photos.6 hours ago
OK KIDS! Ready to party? Hungry?
Come to our little play pen with your bike around 6 tonight. CLIF Bar Night Out is here!

On tap...
Fun twisty course, BBQ and drinks, swag and raffle prizes.

What you need to know...
- Make sure to grab a raffle ticket at Reg. We'll call tickets 10min before each 6 and 7pm race start. CLIF Bar supplying all door prizes this evening.

- Pre Reg if you haven't already. Going to break attendance records tonight so save the time and hassle.

- Finished? Grab a custom 'Clif Night Out' Trucker cap if we haven't already handed you one.

- Park in tight! This will max out our parking space so please follow our parking crew's guidance.

- Food/drinks are free to all racers. If you have a friend, family member or child that's not racing and wants a plate that's ok with a small donation.

See you at thew park!
NW MTB Series
NW MTB Series updated their profile picture.6 hours ago

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