The II Triathlon of Sestao, set to take place on September 6, 2026, offers an exciting challenge for cadet athletes with its supersprint distance. Competitors will start their journey from the picturesque town of Sestao and finish at the same location after completing a race that includes a swim in the sea or local body of water (300 meters), followed by a bike ride through scenic routes around the area (13 kilometers), and concluding with a run along the coastline or nearby trails (2.2 kilometers). The event promises to be an immersive experience, complete with chip timing for accurate results and ample transition areas where participants can store their belongings in lockers provided at no extra cost. The race is open exclusively to cadet athletes, ensuring a fair competition among peers. Registration for the triathlon opens on July 1st, with early bird pricing available until August 6th. Participants are encouraged to secure their spot by paying €15 if they already hold a valid license or €20 without one. The deadline for registration is September 4th, and no refunds will be issued after this date. On the day of the event, athletes can pick up their race numbers at Sestao's sports center between 8:30 AM and 10:30 AM. Transition boxes will open at 9:15 AM for participants to set up their gear before the start time. The organizers recommend that all transition areas be cleared by 10:45 AM, ensuring a smooth race day experience. The event is governed by rules established by the Basque Triathlon Federation and strictly adheres to traffic regulations throughout its course. A large parking area will be available within walking distance of the start line for participants' convenience, with additional spots reserved near the finish line for support staff and officials. For more information or inquiries about race day logistics, contact the event organizers at trisestao@gmail.com or reach out directly to Gorka - Vero. This triathlon is a must-attend for any cadet athlete looking to test their skills in an engaging coastal setting. The II Triatlón de Sestao promises a memorable race day filled with competition, camaraderie, and scenic beauty along the Basque coast.
Races Offered
Super Sprint
Sep 06, 2026
straighten
Distance —
0.4K Swim 10K Bike 2.5K Run
terrain
Type —
Multisports
timer
11:18
sell
€15.00
Weather History
These values represent the 3-year monthly averages for September in Sestao.
thermostatTemperature
14.4° / 23.0°
wb_sunnyFeels like
13.7° / 22.5°
light_mode
Avg sunshine hours
9h 15m
water_drop
Avg rainfall
3.9 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
9.3 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
79.9%
wb_twilight
Sunrise
07:51
nightlight
Sunset
20:20
About Sestao
Learn more about the host city, Sestao.
Sestao is a town and municipality of 27,296 inhabitants located in the province of Biscay, in the autonomous community of Basque Country, northern Spain. It is in the left bank of the Estuary of Bilbao and part of Bilbao's metropolitan area.