100-Mile Aqua Challenge

Challenge yourself to swim or aqua jog 100 miles!

Brought to you by your Y, City of Eugene Rec and Willamalane

The year-long challenge motivates individuals to stay active and reach for a long-term goal — the equivalent of swimming across the English Channel four times.

Participants will track their miles, yards or laps, and take part in a friendly competition. Swim or aqua jog in a pool, lake, ocean, river or whatever suits you. We throw a mid-challenge pool party over the summer and an end-of challenge party once the Challenge wraps!

Users of the Y's pool must either be an active member or buy a Day Pass.

Registration for 2026 is open now!

Who: Anyone ages 12 and older
What: Swim or aqua jog 100 miles
When: From Jan. 1, 2026 to Dec. 31, 2026
How: Participants will keep track of their individual mileage through the Y app (details to come!)
Cost: Participation is free! Optional T-shirts are available for $20—fun new design coming for 2026!

2025 End-of-Challenge Celebration

Did you participate in the 2025 100-Mile Aqua Challenge? If so, join us for the End-of-Challenge Celebration! No worries if you didn't finish every last mile—whatever your best looked like in 2025, we want to celebrate it with you! An official invitiation will be sent out to registered participants in early January.
When: Saturday, Jan. 17, 6 to 8 p.m.
Where: Eugene Family YMCA Aquatics Center
Who: All 2025 100-Mile Aqua Challenge participants and their guests
What: A party, naturally! Enjoy snacks, tunes and of course, fun in the pools!
RSVP: Registered participants, look for an invite in your email in early January