18 July 2027TriathlonSprint · OlympicsupertriFlat and fastRelay option
A flat, fast Sunday triathlon at Mercer County Park, with a swim in Mercer Lake, a fast bike and a shaded run through the park. Sprint and Olympic distances, individually or as a relay.
Terrain
Road
The organiser describes a fast bike course and a shaded run through the park
Elevation
Flat
Organiser claim: one of the fastest, flattest courses in the nation. No elevation gain published
Swim
Lake
Swim in Mercer Lake; the organiser does not state water temperature
Wetsuit
Not stated by the organiser
Region
New Jersey
Mercer County Park, New Jersey
Your runway
41 weeks to race day: base season
Plenty of runway. This far out, the win is a boring, consistent base rhythm: aerobic volume, strength, technique. The structured block starts closer in; what you do now decides how high it can climb.
R
Recover
Consider recovery context, sleep and readiness before adding training load.
A
Align
Fit the plan to your actual life, not the one you wish you had.
C
Condition
Minimum effective dose. The right sessions, done fresh.
E
Execute
Race-week protocol, pacing, contingency. Nothing new on race day.
Commit to the date and the work gets a shape: your countdown starts, the emails arrive in step with your build, and the app anchors a recovery-led block so the final week lands exactly on race day.
One confirmation email, then the road begins. Registering for the race itself stays with the organiser.
“The organiser calls this one of the fastest, flattest courses in the nation, so pacing discipline matters more than climbing strength: practise holding an even bike effort and a controlled start to the 10 km run. Relay entries are offered if you want a team format.”
Abraham Spring: founder, Unbroken
The race
Supertri New Jersey is on Sunday 18 July 2027 at Mercer County Park. The Olympic is a 1,500 m swim, 40.5 km bike and 10 km run starting at 7:30 AM; the Sprint is 750 m, 22 km and 5 km at 7:15 AM, and both are offered as individual or relay entries. The swim is in Mercer Lake, the organiser describes a fast bike course and a shaded run through the park, and states it is one of the fastest, flattest courses in the nation and one of the 10 largest triathlons in the nation. Registration is open. Water temperature, wetsuit rules, elevation and prices are not stated on the event page.
The course
Swim1.5 km
Lap count not published
Olympic swims 1,500 m and Sprint 750 m in Mercer Lake. The organiser does not state water temperature or whether wetsuits are allowed.
Bike40.5 km
Lap count not published
Olympic rides 40.5 km and Sprint 22 km. The organiser describes a fast bike course.
Run10 km
Lap count not published
Olympic runs 10 km and Sprint 5 km. The organiser describes a shaded run through the park.
Cut-offsSunday 18 July wave starts per the organiser: Sprint 7:15 AM, Olympic 7:30 AM. Individual and relay entries are offered
Not yet confirmed for this edition: lap counts, elevation gain, water temperature, wetsuit rules, transition locations, finish cut-off times, entry prices. We publish these only once they are on the official course page, so check there before you pace off anything here.
Sprint · Olympic. Pick the distance that fits your training runway, not your ego: the right distance is the one you can arrive at fresh.
How hard is the course?
Road terrain, flat profile. Organiser claim: one of the fastest, flattest courses in the nation. No elevation gain published
What is the swim like?
Swim in Mercer Lake; the organiser does not state water temperature. Not stated by the organiser. Practise open water before race week, not during it.
How long do I need to train for it?
Race day is 18 July 2027. For the olympic, a proper recovery-led build wants about 8 weeks, which means starting around 23 May 2027. Later starts still work: the block compresses honestly rather than pretending, and it always anchors to the exact race date.
How do I enter?
Entries are handled by the organiser. Use the Register button above: it goes straight to the official site.
Nobody warns you about the body marking, the cold, or the fact that everybody looks like they know what they are doing. They do not. Here is the honest version.
This listing is for information only. Unbroken is not affiliated with, endorsed by, or sponsored by Supertri New Jersey or its organiser. Details are based on publicly available information; names are used descriptively to identify the event. For accurate, up-to-date information and entry, always use the official event website.
