A brick workout in triathlon means performing two disciplines back-to-back with little or no rest between them. The most common example is a bike ride immediately followed by a run.
These sessions help athletes prepare for the unique challenge of transitioning between disciplines on race day, when your legs often feel heavy and awkward after cycling.
What is a brick workout?
A brick workout simply means combining two disciplines in one training session with minimal rest between them.
The most common brick session in triathlon is:
- Bike → Run
Less common variations include:
- Swim → Bike
- Swim → Bike → Run (race simulation)
Brick sessions train your body to adapt to the feeling of switching disciplines, especially the transition from cycling to running.
Why brick workouts are important
Brick workouts prepare athletes for race-day conditions.
When you start running after cycling, your muscles must suddenly change movement patterns. This often creates the familiar “jelly legs” feeling that many triathletes experience in the first few minutes of the run.
Practicing brick workouts regularly helps your body adapt and improves coordination, pacing, and overall race performance.
How to structure a brick workout
For beginners, brick sessions should be simple and controlled.
Example beginner brick session:
- 45–60 minute bike ride
- Immediately followed by
- 10–15 minute easy run
The goal is not intensity but adaptation. Over time, you can increase the duration or intensity of the run.
When to include brick workouts in your training
Most triathletes include brick sessions once per week during their training cycle, especially when following a structured sprint triathlon training plan.
They are especially useful in the weeks leading up to a race, when athletes want to simulate race conditions and improve transition efficiency.
For sprint-distance triathlons, shorter brick sessions are usually enough to prepare your body for the bike-to-run transition.
Common mistakes in brick workouts
Some athletes make the mistake of turning every brick session into a high-intensity workout.
Common mistakes include:
- Running too fast after the bike
- Making brick sessions too long
- Skipping recovery afterward
- Performing them too frequently
A controlled approach is usually more effective.
Types of brick workouts
Not all brick workouts are the same. Athletes use different variations depending on their experience level and training goals.
Classic bike → run brick
The most common brick session involves finishing a bike ride and immediately starting a short run. This mimics the transition you’ll experience during a triathlon race.
Swim → bike brick
Less common but still useful, this variation helps athletes practice the swim-to-bike transition and the feeling of getting onto the bike with elevated heart rate.
Race simulation brick
More experienced athletes sometimes combine all three disciplines — swim, bike, and run — to simulate race conditions. These sessions should be used carefully, as they can be physically demanding.
👉 If you’re new to triathlon, it’s best to start with short sessions and gradually increase duration as your fitness improves.
How long should a brick workout be?
The length of a brick workout depends on your experience level and the distance you are preparing for.
For beginners training for a sprint triathlon, a typical brick session might look like this:
- 45–60 minute bike ride
- Immediately followed by
- 10–15 minute easy run
The run portion is usually shorter because the goal is to adapt to the transition rather than build running endurance.
More experienced athletes may extend the run to 20–30 minutes or increase the intensity of the bike ride to better simulate race effort.
👉 If you are following a structured sprint triathlon training plan, brick workouts are typically introduced once per week as race day approaches.
Quick brick workout checklist
- Start with short bike-to-run sessions
- Focus on smooth transitions
- Keep the first minutes of the run easy
- Practice pacing and fueling
- Use brick sessions to simulate race conditions
