Series Details


  • April 13 – Pre-reg event, course preview, no racing
  • April 20, 27
  • May 4, 11, 18 ​​
  • June 1, 8, 15, 22, 29
  • July 13, 20, 27
  • Aug 3, 10, 17 (Finals)


Register for all our races on Webscorer

  • Online Registration remains open until 15min before each wave start. Don’t be late!
  • Registration pays for rider insurance, medical personnel, park rental fees, RFID timing, online registration/results and website, fake moustaches, sparkly tights, race numbers, toilets and our wonderful staff and crew!


Single RaceSeason Pass10 Race Pack5 Race Pack
Adults (16+)$30$410 (15% off)$270 (10% off)$142 (5% off)
Juniors (10-15)$15$205 (15% off)$130 (13% off)$70 (7% off)
Kids (6-9)$5nanana
  • All racers need a $10 timing tube. This is a one-time cost. You buy and you own it. Most of you probably have one already if you race bikes around here.
  • Webscorer registration fee not included in prices above.

Start Times

We are using interval starts this year. Start times are approximate. We send 6 riders at a time in ~15 sec intervals. Riders will pass through the finish line to begin and end their race. Kids races start at the finish line arch. Adult and Junior starts use the pavement or grass field depending on course direction.

5:00 PMKids (6-9yr)shorter lap
5:15 PMLittle J’s (10-12 Juniors)
Cat 4 Juniors (13-15)
1 lap
2 laps
6:00 PMCat 3 Adults & Juniors (13-15)
Cat 4 Adults
3 laps
2 laps
7:00 PMCat 1 Adults
Cat 2 Adults & Juniors (13-15)
4 laps
3 laps


Races are held in North Seatac Park. 13699 18th Ave S, SeaTac, WA 98168, USA

Categories & aWARDS

All categories are self-selected. Please don’t sandbag or we might have to publicly embarrass you. Awards are granted after the season finale based on points earned in the best 13 of 16 races. Adult and Junior points go 40 deep, Kids 15 deep.

CategoryDescriptionAward Class
Cat 1These people are really fast. This is similar to an elite or expert field. 4 laps.Women
Cat 2This is a “newer” Expert rider, faster sport rider, or aging hero field. 3 laps.Women
Junior 13-15 girls
Junior 13-15 boys
Junior 13-15 non-binary
Cat 3This is for faster beginners, strong sport riders, or if your bedtime doesn’t allow you to race at 7pm. 3 laps. Women
Junior 13-15 girls
Junior 13-15 boys
Junior 13-15 non-binary
Cat 4This is beginner or novice. No experience necessary! Really, you don’t need special skills, except you do need a bike. 2 laps. Women
Junior 13-15 girls
Junior 13-15 boys
Junior 13-15 non-binary
Little J’sThese are our younger Juniors. 1 lap.10-12 girls
10-12 boys
10-12 non-binary
Kids 9 & underAge 6-9 yrs old and race a shortened lap. The Kids race does not use timing chips.9 & under girls
9 & under boys

Racing age is the kid’s age on the day of the race. (Let us know if it’s their birthday and we’ll give them a shout out). 😉


Results are available on Webscorer immediately following each race (we try to post them faster than it takes to scrub the dirt off your neck). The Webscorer app is the easiest way to get results–install Webscorer from the Apple App Store or Google Play Store.

On Site