Shell Lake Sprint Triathlon/Duathlon
About this race
Imagine a triathlon that begins just steps from a sparkling 2,600-acre lake, surrounded by the charm of a small town where life moves at a more peaceful pace. The Shell Lake Lions Triathlon/Duathlon, held annually on the fourth Saturday in July, brings athletes and spectators together for a memorable race through one of Wisconsin’s most scenic communities. With a course that winds along the beautiful countryside, a public beach, lakeside park, and campground, participants enjoy more than just a physical challenge—they experience the warmth and creativity of Shell Lake itself.
The Shell Lake Lions Club hosts two events at 8 AM on Saturday, July 25th, 2026 at the Shell Lake beach. Timing services are provided by Duluth Timing and Events. There are 2 events, the triathlon (a traditional swim/bike/run) and the duathlon (a run/bike/run event). Both events will run concurrently. Individual or teams may enter either event.
The triathlon course is a 1/3 mile swim, a 15 mile bike and 3.4 mile run.
The duathlon is a 2 mile run instead of the swim, a 15 mile bike and 3.4 mile run.
Medals will be given to all participants.
JOIN US in Shell Lake for one of the most beautiful race routes in Northern Wisconsin!
Pick your distance
Triathlon
Shell Lake Lions Triathlon
Shell Lake Lions Triathlon Relay
Duathlon
Shell Lake Lions Duathlon
Shell Lake Lions Duathlon Relay
Typical race-day weather
Based on 3 years of Open-Meteo archive data for this event's race dates in Shell Lake, plus the 3 days either side.
The sun rises at 5:43 AM and sets at 8:45 PM local time (CDT) in Shell Lake on July 25, 2026 — 15h 01m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
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Other races near Shell Lake
Different organizers, within 40 miles, in the next three months
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 2 Shell Lake events
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