ABOUT
Endurance coaching for running, triathlon and long-distance events that is built around real life.
Who We Are
Triforia is an Oxfordshire-based endurance coaching company specialising in running and triathlon. Founded by Alex Birch, a Level 3 Personal Trainer and British Triathlon accredited coach, Triforia helps you train smarter, stay injury-free and perform at your best across events ranging from 5K, half marathons and marathons through to Ironman and ultra-distance challenges.
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A Coaching Philosophy Shaped by Real Life
Alex combines over 25 years of personal experience in endurance sport with a professional background shaped by nearly two decades in international investment banking. That combination underpins Triforia’s coaching philosophy: structured, time-efficient training that delivers results while maintaining a healthy work-life balance.
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Experience That Informs Every Programme
As an athlete, Alex has completed multiple major city marathons, Ironman and Ironman 70.3 events, ultra-distance runs, open-water swims and multi-discipline endurance races. This depth of experience allows him to coach with both technical understanding and real-world perspective, helping you to prepare confidently for your chosen events while managing fatigue, recovery and injury risk.
Strength-Led Individualised Training
Strength and conditioning sits at the core of the Triforia approach. As a Level 3 Personal Trainer and resident coach at Soho Farmhouse, Alex integrates intelligent strength training with endurance programming to support sustainable progress and long-term performance. All training plans are fully personalised, data-informed and designed around the individual, not generic templates.
Coaching That Fits Your Life
Triforia works with people of all ages and abilities, from those new to running or triathlon through to experienced competitors seeking structure, accountability and performance gains. Coaching is primarily delivered remotely via TrainingPeaks, allowing athletes across Oxfordshire, the UK and beyond to benefit from expert guidance. If you live locally (or are prepared to travel), swim, bike or run sessions can be arranged on a one-to-one basis or in small groups
Supporting Busy People On A Mission
For clients leading busy, ambitious lives, Triforia provides clarity, consistency and confidence; helping you achieve challenging goals while remaining healthy and motivated and without sacrificing your commitments to family, friends and work .