Half marathonRoad🇵🇷 Coamo, Puerto Rico

San Blas Half Marathon

Sunday, 7 March 2027In 5 months · Start 06:30

Puerto Rico's classic half marathon, run in Coamo since 1963 and capped at 5,000 runners, with the steep Cuesta del Ajoguillo around km 14 usually deciding the race before the finish at the town plaza.

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Facts checked 19 Oct 2026 against primerahora.com, metro.pr, elnuevodia.com.

Elevation gain

200 m

Rolling · ↓ 200 m

Start altitude

132 m

above sea level, from terrain data

Temp at start

21°C

Peaks around 28°C

Entry fee

≈ $70

Open entry

Finishers

4,250

typical year

Course

Point to point

Cut-off: check site

Getting thereFly into SJU (San Juan), about 55 km from the start

Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Rolling: about 200 m of climbing and 200 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

21°C

Peak during race

28°C

Humidity

71%

Chance of rain

Wind

12 km/h

Race day in past years

Historical averages for 7 March ±3 days, 2016–2025, from 06:30 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

Finish times by age group

No data yet. We’re collecting age-group results race by race.

Runner reviews

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

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Show your runners the course facts and race-day weather. Paste this code into your site; it displays the badge below and links to this page. It updates automatically when the race details change.

<a href="https://irun42.com/race/san-blas-half" title="San Blas Half Marathon on iRun42"><img src="https://irun42.com/badge/san-blas-half.svg" width="300" height="120" alt="San Blas Half Marathon: course, elevation and race-day weather on iRun42" /></a>

Plan your trip

Searches are set for Coamo and the race weekend.

Hotels near the start lineClosest first · 2027-03-06 → 2027-03-08Booking.com Flights to CoamoArrive 2027-03-05, fly home 2027-03-09Google Flights Things to do in CoamoTours and attractions in Puerto Rico for the days around the raceKlook Mobile data in Puerto RicoAn eSIM for maps, tracking apps and results on race dayAiralo Airport transfer from SJUSan Juan airport is about 55 km from the startKiwitaxi

Gear for this race

Lightweight running shoesBuilt for fast road miles Electrolyte tabletsIt often reaches 28°C during the race Energy gelsFuel for race day

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Around the same time

All races in March 2027 →