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Triathlon · Glossary

What is Brick Training (Triathlon)?

A training session combining two triathlon disciplines back-to-back — most commonly cycling followed immediately by running.

Brick training gets its name from the ‘brick legs’ sensation when switching from cycling to running — legs feel heavy and unresponsive for the first 5-10 minutes of the run as muscles adapt from the circular pedalling motion to the linear running gait. Bike-to-run bricks are the most common and essential triathlon training session. Regular brick sessions reduce the transition impairment and train the neuromuscular system to switch movement patterns. Swim-to-bike bricks are also used but less common.

Key points
  • Bike immediately followed by run
  • Named for the heavy ‘brick legs’ sensation
  • Reduces T2 transition impairment
  • Essential for Olympic, 70.3 and Ironman preparation

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