Stay motivated by swimming 10,000 yards cumulatively between May 1-31 on the app.

All current USMS members are welcome to participate in this challenge for FREE. The May 10K can be done in any stroke accumulated through your regular workouts. Simply swim 10,000 yards during the month of May to complete this challenge!

This is a great way to prepare for the 2021 USMS Summer Fitness Challenge (2K) or get ready to go long for the 2021 USMS 5K/10K ePostal National Championships (May 15 - Sept. 15).

By completing the 10K, you'll earn a 35% discount from TRISWIM plus a chance to win lots of TRISWIM raffle prizes.

Log Results in the App

We partnered with so you can input your results on their app to benchmark your swims for the future, compare against other swimmers, and join in on the social fun. Swimmers can upload swims or workouts using a compatible device (Garmin, Apple Watch, etc.), or they can be manually uploaded, so don’t worry if you don’t have a smartwatch!

Here is how it works:

  1. Link your My USMS account and account (this is required as the challenge is a USMS member benefit)
  2. Find and join the challenge on the app (here is how)  
  3. Complete your swim or workout
  4. Log it on the app
  5. Bask in the glory of your accomplishment, receive your badge on, and maybe see where you rank against others :) 

Click the button below on your phone to go right to the event on the app to join.

Join the May 10K

Any workouts between May 1 – 31 can be logged towards the 10,000-yard goal


Check Club Finder for a club in your area, find some friends to join you, or complete it on your own. This challenge can be completed in any pool.