Race Intelligence · San Juan, Puerto Rico
San Juan begins a 70.3 in Condado Lagoon and, in the familiar course story, eventually brings athletes towards Old San Juan. Protected water can create early confidence. It should not become an excuse to over-ride the bike.
San Juan, a coastal fortification and beach.
Your day in San Juan
I’m Tom, the coach behind Sense Endurance Coaching. Tell me where you are now and I’ll show you what a strong day in San Juan could look like.
The course behind your race
Condado Lagoon gave the previous edition a contained start before flatter city riding and a run towards historic San Juan. That is an appealing way to race, but the 14 March 2027 event does not yet have a final mapped route. Plan for a calm lagoon opening without borrowing last year's bike turns or run laps.
Condado Lagoon, previous swim circuit
Condado Lagoon is a place to settle into your stroke. Use the protected setting for clean sighting rather than spending energy changing lines to gain a few metres.
Sight the marked swim course. Find comfortable strokes.
San Juan city roads, earlier bike stage
The previous San Juan bike was comparatively flat. Do not let that disguise your effort; take in fluids early so Caribbean conditions do not own the half marathon.
Set a flat-road power cap. Drink from the start.
San Juan bike return, current route pending
Keep drinking on the approach to T2. If the historic-city run returns in 2027, the bike-to-run change will reward athletes who did not spend everything on the flat roads.
Arrive hydrated. Leave speed for San Juan.
Old San Juan, previous run setting
If the course again reaches Old San Juan, run the first section by sustainable effort in the heat. Gaining a few positions here is not worth losing the final stretch.
Watch heat and breathing. Do not chase early.
San Juan finish, current route pending
Only turn up the pace when your cooling, drinking and footwork still feel under control. Old San Juan is a poor place to discover you have raced the bike too hard.
Keep cooling. Race the final kilometres.
Confirm the 2027 Condado Lagoon swim, San Juan bike course and half-marathon run on the final course maps. The previous one-lap lagoon buoys, city roads and Old San Juan turns may change. Leave exact landmarks out of your plan until the 2027 map is ready. Check aid and transition access when updated.
A race-day forecast is not meaningful yet; check back closer to the event.
Historical baseline, 2019–2025 · Open-Meteo historical archive · Updated 2026-09-14.Historical comparison only. This is not a forecast for 2027.
Make your finish prediction and I can send this plan to you in race week.
Prepare for San Juan
A finish range gives you something to work towards. The preparation is specific to this race: a composed lagoon swim and sensible city-road power lead to a half marathon begun within itself rather than on borrowed speed.
I’m Tom. With Sense Endurance Coaching, I’ll build that preparation around your life, follow how you respond and adjust the work as you get closer to San Juan.
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