How to Watch Triathlon Live Online: Complete Streaming Guide 2026
World Triathlon Championship Series (WTCS)
The WTCS is the sport’s elite short-course circuit, running from May to September with ten rounds counting towards the world title. World Triathlon broadcasts all races live and free on the World Triathlon YouTube channel and via worldtriathlon.org. Coverage typically begins 30 minutes before the elite start, with full English-language commentary. For the 2026 season — which doubles as the LA28 Olympic Games qualification campaign — this is the essential viewing destination for watching Matt Hauser, Beth Potter, Tilda Månsson, Alex Yee, and Cassandre Beaugrand battle for world ranking points.
T100 Triathlon Series
The T100 (Professional Triathletes Organisation) is the professional long-course circuit covering events in Singapore, San Francisco, Spain, the French Riviera, Vancouver, Dubai, and the Qatar World Championship Final. T100 races stream live on the t100.com website and T100 YouTube channel, with high-quality broadcast production and expert commentary. Races typically last three to four hours. UK-based fans can also find T100 coverage on Eurosport and Discovery+. Watch events such as Katie Zaferes, Hayden Wilde, and Taylor Knibb compete across the 2026 season.
IRONMAN and IRONMAN 70.3
IRONMAN races are streamed live through the IRONMAN Now app (free download, iOS and Android), which provides a live athlete tracking map, race broadcast, and commentary for all IRONMAN and IRONMAN 70.3 Pro Series events. The app also allows GPS tracking of specific age-group athletes — useful for spectators and family watching remotely. For flagship events such as Kona, the 70.3 World Championship, and IRONMAN UK Bolton, additional broadcast coverage is often available on YouTube or regional sports networks.
Challenge Family Races
Challenge Family events — including Challenge Roth, one of the sport’s most beloved races — stream live on the Challenge Family website and their YouTube channel. Challenge Roth in particular attracts global viewership for its atmosphere, course records, and the tens of thousands of spectators lining the route. The 2026 edition takes place on 5 July and is always one of the season’s most watched events outside Kona.
UK Domestic Triathlon
For British Triathlon and UK domestic events, the British Triathlon YouTube channel covers selected elite and age-group races. TriRadar and 220 Triathlon provide live text results, race reports, and same-day coverage of events including Outlaw Nottingham, IRONMAN UK Bolton, and the British Triathlon domestic duathlon and aquathlon series.
Quick Reference: Where to Watch in 2026
- WTCS races — World Triathlon YouTube / worldtriathlon.org (free, live, English commentary)
- T100 races — t100.com / T100 YouTube / Eurosport UK
- IRONMAN and 70.3 — IRONMAN Now app (free, iOS and Android)
- Challenge Roth and Challenge Family — challengefamily.com / YouTube
- UK domestic events — British Triathlon YouTube / TriRadar / 220 Triathlon
