The Lake Triathlon Series 2026: Conquer the Quarry
Experience South Gloucestershire’s Premier Midweek Sprint Triathlon Series
5 Races, 1 Stunning Venue
Triathlons are returning to the stunning, crystal-clear waters of Cromhall Quarry for 2026, debuting for the first time as a fully in-house event.
Now managed directly by our team at The Lake, this year’s series offers the same competitive edge and welcoming atmosphere you love, with a refreshed focus on the athlete experience.
Whether you’re chasing a new PB, building race fitness, or competing for the overall series title, join us for a season of racing run by the people who know these waters best.
2026 Race Calendar
Race 01
13th May
Wednesday
RESULTS →
Race 02
10th June
Wednesday
Book Race 2 →
Race 03
08th July
Wednesday
Book Race 3 →
Race 04
12th August
Wednesday
Book Race 4 →
Race 05
12th Sept
Saturday
SERIES FINALE
The Course: Standard Sprint Distance
Test your limits on a fast, scenic course designed for speed and safety.
Swim
750m
Open water quarry swim with crystal clear visibility and full safety support.
Bike
18km
A fast, rolling road course through local South Gloucestershire lanes.
Run
5km
Flat road run finishing with a spectacular descent into the heart of the quarry.
Ready to Race?
Secure your spot for the 2026 series today. Join us at Cromhall Quarry for the ultimate midweek triathlon experience.
Enlarge Elevation
5km Quarry Run
Race Day Schedule
We’ve designed our midweek races to fit perfectly into your training week, with a special morning format for our Saturday finale.
| Event Detail | Midweek (May–Aug) | Finale (Sept 12th) |
|---|---|---|
| Parking | Bottom car park (by water) | Bottom car park (by water) |
| Registration (No late entries) |
5:30 PM – 6:30 PM | 7:30 AM – 8:30 AM |
| Transition Closes | 6:35 PM | 8:35 AM |
| Race Briefing | 6:40 PM at Start | 8:40 AM |
| Male Start | 6:50 PM | 8:50 AM |
| Female Start | 6:55 PM | 8:55 AM |
Prizes & The Series Championship
At The Lake, we celebrate every victory.
Each Race
- 1st Male Overall
- 1st Female Overall
- Podiums & Bragging Rights
Series Champion
Accumulate points across all 5 races
- Overall Male Champion
- Overall Female Champion
- Annual Series Trophy
Why Choose The Lake?
Why Race at The Lake?
Clear Water
Famous quarry clarity for an unparalleled swim experience.
Safe Course
Fully supported safety team and well-marshalled routes.
In-House Team
Managed directly by The Lake for a personal touch.
Fast Format
Midweek sprints perfect for pros and first-timers alike.
5 Midweek Races
Crystal Clear Water
In-House Event
Make 2026 Your Strongest Season Yet
Don’t miss out on South Gloucestershire’s premier sprint series. Whether you’re in it for the podium or your personal best, the start line is waiting.
Secure your entry via RaceNation.