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 personalized 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 was the Chief Product Officer at Quester.io - a London-based Ed-Tech startup. He’s an avid marathoner and his next goal is to go under 2:50 at the Florence marathon in November! Half Marathon PB: 1:21:03 🏃
👨💼 Willem (CEO) is an age-group triathlete, and most recently was a product manager at a Berlin-based food-tech startup. He most recently qualified for the Ironman 70.3 world championships in November, and his big dream is to race Kona! Full Ironman PB: 9:30 🏃
🧑💻 Dimi (Tech) is a software engineer from Greece! A lifelong triathlete, he enjoys the olympic distance the most and recently finished an Ironman 70.3 in Marathon, Greece. 10km PB: 39:30 🏃
🏃 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!
