“The Matt Mason Memorial “Cowboy UP!” Triathlon has been established to honor, pay tribute, support and celebrate the lives of those who have made the ultimate sacrifice for their country. This triathlon is our way to stay close to our dear friend and keep his memory alive while focusing on supporting others like him and their families.”

race information
Time and Date:
7am – August 5th, 2018.
Smithville Lake Crow’s Creek Park, Smithville, MO
Individual Fees:
Relay Fee
(Relay of 2 or 3):

the course

Our goal was to design an enjoyable race that wasn't too hard, but also wasn't too easy. With the great feedback we received, the race is sure to be even better this year.

500 Meter

The 500 meter swim will be a time trial start. Groups will be organized by estimated swim time.

11 Miles

Improved bike route for 2018! The bike route is 11 miles on hilly paved park and county roads including 2 loops once outside the park. The course will be closed to incoming traffic. Both 180 degree turns have been eliminated.

5 K

The 5k run takes place on a mostly flat walking trail that runs along the shore of the scenic Smithville Lake.

Swim Start: The swim start WILL be a time trial start where athletes enter the water approximately every five seconds. Starting at 7 minutes and going up to 14, there will be minute-marker signs for athletes to place themselves in line according to the swim time that is most comfortable. If faster than 7 minutes stand in front of the 7 minute sign and if slower than 14 minutes stand at the end of the 14 minute line.

Aid Stations: There will be three aid stations along the course – one just outside of the transition area and two along the run course. Water and an electrolyte drink mix (Gatorade) will be provided at each aid station.

Race information “Cowboy Up” Kids Run
Time and Date:
Kids will start once the last cyclist is off the course (estimated 9 or 9:30 – August 5th, 2018
Smithville Lake Crow’s Creek Park, Smithville, MO
½ mile (Age 5-13)
Individual Fees:
the course (Kids)

Kids will now have the opportunity to run and experience the tradition of an American Flag lined course and hoisting a flag across the epic long finish! The “Cowboy Up” Kids Run will be held at 10:00 am. The course will be an out and back run on the paved walking path along the banks of beautiful Smithville Lake. There will be volunteers available along the route to ensure everyone stays on course. As you are traveling to the "Cowboy Up" Kids Run please keep in mind the roads along the bike course will be closed from 6:30 am to 9:00 am or as soon as the last cyclist is off the course. Each participant will receive a finishers dog tag.Donations appreciated.


The new awards given for the top male and top female athletes are continuing this year! Here are all the awards (roughly $5K worth):


Directions: 169 N toward Smithville to 92 HWY and go East or I-35 toward Kearney to 92 HWY and go West.

Take 92 HWY to HWY “E”/County Road “E” and go North, “E” will take you to Crows Creek. Turn left onto Crows Creek Campground Rd and stay to your left at the fork.

Race site is at Shelter 5; there are also Crow's Creek signs along the route as well as race signs.

Race Day Parking / CARPOOL: Athlete's, Volunteers and Spectators will not have to pay to enter the park. PLEASE consider carpooling with other participants, volunteers and/or spectators.

travel & lodging

Camping: On-site camping is available at Crows Creek - close proximity to transition area. For more information, please visit the Clay County Parks Smithville Lake website.

usat rules

2018 Rule Book: View Here

training plans

Official Training Plans for USA Triathlon: View Here

Packet Pick-up: This event is a USA Triathlon (USAT) sanctioned event. Athletes are required to be present with a photo I.D. and annual USAT membership card (if you have one) at packet pick-up. USAT does not allow others to pick-up packets on your behalf. Athletes will not be allowed to take race materials without a photo I.D. If you are not a USAT member you will be required to purchase a one day pass during registration ($15 for adults, $10 for youth/17 and under as a credit card payment).

2018 Packet Pick-Up locations: WEDNESDAY, AUGUST 1st 3PM to 7PM at Ward Parkway Mall (8600 Ward Parkway, Kansas City, MO 64114). FRIDAY, AUGUST 3rd 11AM to 6PM at Endurance House (8940 NW Skyview Ave. Kansas City, MO 64154). SATURDAY, AUGUST 4th 10 AM to 2 PM at Smithville Lake Crow’s Creek Park (Shelter 5), Smithville, MO. See directions below.

Course Closing - IMPORTANT: Smithville Lake Parks and Recreation will be closing the course at 6:30 AM, and no one can get in or out from that point until the last athlete has left the bike course. Alternative parking will be available if you come late, however it involves a 2 mile hike. Don’t say we didn’t warn you…

Register early, be a part of an unforgettable experience— Matt Mason Memorial COWBOY-UP! Triathlon 2018 IS ON! Volunteer Register

Help us achive our goal. Click here to learn more!


© 2018 Matt Mason Memorial COWBOY-UP! Triathlon. All Rights Reserved.

© 2018 Matt Mason Memorial COWBOY-UP! Triathlon. All Rights Reserved.