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triathlon

Lake Terramuggus Olympic Triathlon

Date
August 15, 2026
Distance
Olympic Tri · Olympic Relay Tri · Aquabike

From the Organizer

LAKE TERRAMUGGUS OLYMPIC DISTANCE TRIATHLON

 

August 15, 2026
8:00am

Join us for the Lake Terramuggus Olympic Distance Triathlon!  This is the perfect way to celebrate a summer of training and racing at the Lake Terramuggus Sprint Series - with limited adaptation to our sprint course this Olympic race will be familiar to those participating in the sprint series throughout the summer.  Even if it is your first time to Lake T this race is fun and fast, moderate hills on the bike and run.  A great race for your first Olympic Distance Tri!

This race will be a 1600 yard swim, 25 mile bike and a 10K run.  This event is designed with the same mission as the Lake T Sprint Series - to encourage participation from all levels of triathletes, provide a great training opportunity and foster a community of athletes.  

Please Note: There will be a bike cut-off time limit for athletes on course.  You must be OFF the bike course within 2 hrs and 45 minutes of the start of the second wave.  If you have not completed the course in the allotted time, you will still be allowed to run 1 loop of the run course, but you will not be eligible for any awards.

T-shirts for pre-registered until August 1st.

*There are NO refunds of race entry after August 1st. 


Race Schedule:
6:30 am - Race Day Check-In Opens
8:00 am - Wave 1 Starts(Men & Relay)
8:02 am - Wave 2 Starts(Females)

 

Race Location:
Lake Terramuggus, Blish Park
Marlborough, CT 


Registration Details:

*Early bird pricing thru 3/31/25- $20 off pricing below*

Prior to Race Day:
Individual: $115
Relay: $135
Aqua/Bike: $105

Race Day Registration:
Individual: $130
Relay: $150
Aqua/Bike: $120

 

Race Awards: 
Top 3 Overall Male/Female
Top Males/Females in Age Group Categories: 19 & U, 20 - 29, 30 -39, 40 - 49, 50 -59, 60+. 
Top Relay
Top Male and Female in Aqua/Bike

**PLEASE NOTE**
1. No earbuds are allowed at any point of the race
2. Bikers must have their helmet on and strapped before leaving transition.
3. Bikers cannot mount their bike until they have reached Lake Rd.
4. Bikers must be at least 2 bike lengths behind the racer in front of you.
5. Bikers MUST ride their bike AS FAR TO THE RIGHT SIDE LANE as possible. They can only pass on the left(within the lane) and IMMEDIATELY return right.
6. No animals are allowed at Blish Park per the Town of Marlborough.
*In case the weather gods don’t cooperate all efforts will be made to race in some capacity. If we are unable to race there will be no refunds or transfers. Thank you. 

Distances & Pricing

Olympic Tri8 AMRegister →
Olympic Relay Tri8 AMRegister →
Aquabike8 AMRegister →

Race Location

About This Sport

From Endurance Grid's Founder

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

Three sports, one race — swim, bike, run in sequence, with transitions that are a discipline of their own.

Open water, open roads, and competition with yourself. Cross the finish line knowing what it took to get there.

Triathlon

Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think.

Frequently Asked Questions (FAQs)

What is the Lake Terramuggus Olympic Triathlon?
Lake Terramuggus Olympic Triathlon is a triathlon event held in Marlborough, CT. Learn more about the different endurance sports here.
When and where is the Lake Terramuggus Olympic Triathlon?
Saturday, August 15, 2026 in Marlborough, CT at Blish Park, Marlborough, CT. Check the official event page for exact start times and wave schedules.
How do I register for the Lake Terramuggus Olympic Triathlon?
Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.

Lake Terramuggus Olympic Triathlon

Aug 15, 2026

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