Designing Olympic-Distance Brick Workouts: Building Muscle Memory for the Run After the Ride

Introduction

The term “brick” comes from “Bike + Run = brick,” describing how heavy your legs feel when you start running right after getting off the bike. Brick training in sprint-distance triathlon is the core of building sport-specific fitness—athletes who skip brick sessions will suffer on race day. This article covers 4 classic brick workouts.

1. The Physiological Significance of Brick Training

Why does running after cycling feel so hard?

• The shift in lower-limb blood flow patterns from “pedaling” to “running” takes 5–10 minutes
• The quadriceps have been contracting continuously on the bike, so eccentric contraction capacity drops right after dismounting
• Heart rate fluctuates momentarily due to the posture change (seated → standing)
• Neuromuscular patterns need to be recalibrated

2. Four Classic Brick Workouts

Choose based on your training phase:

3. Key Points for Executing Brick Workouts

The key is “transition fast, no dawdling”:

• Keep T2 within 2 minutes to simulate race conditions
• Change shoes, put on your cap, and hydrate in one smooth sequence during transition
• Control with heart rate at the start of the run
• Record your peak heart rate at each transition as a progress indicator

4. Brick Frequency Recommendations

• Base phase: 1 short brick every 2 weeks
• Build phase: 1 standard brick per week
• Race phase: 1 race-simulation brick per week
• Taper phase: final full brick 10 days before race day

Practical Tips

• Don’t chase pace on your first brick; build the feel first
• Design the last 1–2 km of your bike route as a flat section for an easier run transition
• Have your running shoes, cap, and nutrition ready in the transition area beforehand
• To simulate Kenting’s heat, schedule brick workouts around midday when possible

Conclusion

Brick training cannot replace single-sport sessions, but it is the key to “specificity.” In a 16-week training cycle, you should complete at least 12–15 brick sessions to avoid being defeated by brick legs on race day.

Related Reading

• Triathlon Brick Training: Leg Adaptation Workout Design for Running Immediately After Cycling
• The Science of Brick Training — Muscle Adaptation Mechanisms and Workout Design for Bike-to-Run Transition
• Brick Workout: The Core Session for Triathlon Transition Training
• The Physiology of Brick Training: Why Your Legs Feel Like Lead After Dismounting