What Is a Brick Workout and How Can It Boost Your Triathlon Performance?

If you've ever stepped off the bike in a triathlon and found your legs feeling like actual bricks — heavy, uncooperative, and seemingly disconnected from your brain — you've experienced exactly why brick workouts exist. 

A brick workout combines two disciplines back-to-back in a single training session, most commonly a bike ride immediately followed by a run. The name itself is widely thought to reference that infamous leg sensation, but the purpose is far more strategic than simply suffering through it. 

When you cycle, your body recruits specific muscle groups and develops a highly efficient pedalling neuromuscular pattern. The moment you transition to running, your body must rapidly switch recruitment patterns, recalibrate balance, and redistribute blood flow to new muscle groups — all while continuing to perform at race pace. Without practising this transition in training, race day T2 becomes a costly shock to the system. 

Regular brick sessions train your body to make this switch faster and with less performance drop-off. They also give you the opportunity to dial in your pacing strategy for the run — one of the most common areas where triathletes lose time. Going out too hard off the bike is a race-day mistake that brick training teaches you to avoid. 

Beyond the physical benefits, bricks build the mental resilience of pushing through discomfort — an underrated but essential quality in triathlon. Athletes who regularly include brick sessions in their training arrive at race day genuinely prepared for the full multi-sport challenge, not just its individual parts. 

Find out how to structure brick sessions for maximum benefit. Read the full guide on TriDot →