Stamina is on a mission is to make triathlon training simple, accessible, and effective!
We are an early-stage London 🇬🇧 based startup building a personalised triathlon training app! I (Willem) and Shuowang (coding as we speak) met in London in June 2024 and bonded over the lack of simple personalised training software for beginner triathletes. At the same time, our friends were signing up to their first triathlons and were asking us how to train. We saw a real problem, a rapidly growing market, and that’s how Stamina was born 👶.
We launched an MVP in October 2024, acquired our first paying users within days, and have been developing the app in beta until now. We’ve secured pre-seed funding and launched on the app store in October 2025!
👨💻 Shuowang (CTO) previously rowed for Cambridge University and is an avid marathoner. He recently ran a 2:51 marathon in Florence, Italy! He's now training for his first IRONMAN 70.3 in Germany.
👨💼 Willem (CEO) is an age-group triathlete and licensed triathlon coach. He most recently competed at the IRONMAN 70.3 World Championships, and his big dream is to race in Kona!
🧑💻 Dimi (Tech) is a software engineer from Greece. A lifelong triathlete, he enjoys the olympic distance the most and recently completed an IRONMAN 70.3 in Marathon, Greece.
🏃 Community - we’re supported by a small but enthusiastic group of age-group triathletes in the Stamina WhatsApp community (example here), notable professional triathletes (Greg Harper, Ari Klau), and a strong network of leaders in the endurance sports industry!
