If you've ever watched a triathlon, you've probably noticed something curious. Athletes fly off the bike looking strong, only to spend the first few hundred meters of the run looking like they're learning to walk again.
It's completely normal. The transition from cycling to running is one of the most challenging parts of a triathlon, even for experienced athletes. Your muscles have been working in one movement pattern for the bike leg, then suddenly they're asked to run efficiently almost immediately.
The good news is that you can train for it. That's exactly why brick workouts have become one of the most valuable sessions in a triathlete's training program.
Wearing the same tri suit you'll race in during brick sessions is also a great way to make sure everything fits comfortably before race day.
A brick workout combines two disciplines in one training session without a significant break between them.
Bike → Run
Swim → Bike
Swim → Run
Swim → Bike → Run
For beginners, the bike-to-run brick is by far the most important because it prepares you for the transition that surprises almost everyone during their first race.
There are several theories, but most triathletes joke that it's because your legs feel like bricks when you start running after cycling. It's an accurate description.
The first few minutes can feel awkward, heavy, and uncoordinated. Fortunately, the more you practice the transition, the quicker your body adapts.
Brick sessions aren't just about making your legs feel better. They teach your body and mind how to transition smoothly between disciplines while building confidence before race day.
Improving the bike-to-run transition
Teaching your body to run efficiently on tired legs
Building confidence before your first race
Practicing race-day pacing
Testing nutrition and hydration strategies
Perhaps most importantly, they remove one of the biggest unknowns for first-time triathletes.
Brick workouts are also the perfect opportunity to test your race-day kit, ensuring your tri suit remains comfortable throughout both the bike and run.
The biggest mistake beginners make is turning every brick session into a hard workout. It doesn't need to be. Start simple.
30–45 minute easy bike ride
Transition as quickly as possible
10–15 minute easy run
The goal isn't speed. It's allowing your body to experience the feeling of running after cycling. After a few sessions, those heavy legs disappear much more quickly.
After tougher brick sessions, many triathletes also use compression boots to help reduce feelings of leg fatigue and improve recovery between training days.
For most beginners, one brick workout every one to two weeks is enough.
As your race approaches, you can include them a little more regularly, but they shouldn't replace your normal swim, bike, and run sessions.
Remember, brick workouts are just one part of your overall training plan. Consistency across all three disciplines will always have the biggest impact on your performance.
If you ride at maximum effort, your run will naturally suffer. Most brick sessions should be completed at a comfortable, controlled pace.
The transition is part of the workout. Practice changing shoes, putting on your running cap or visor, and heading straight out the door. Those small routines become valuable on race day.
Your first brick run doesn't need to be 10 kilometers. Even ten minutes is enough to teach your body the movement pattern you're trying to develop.
Brick sessions are an excellent opportunity to practice eating and drinking exactly as you plan to during your race. Never try something new on race day. That includes your clothing. Brick sessions are the ideal time to test your high-quality tri suit, nutrition and hydration strategy together so there are no surprises on race day.
Absolutely. You don't need to be training for an Ironman to benefit. In fact, beginners often gain the most because brick sessions remove much of the uncertainty surrounding race day.
After completing a few brick workouts, you'll arrive at your first triathlon knowing exactly what to expect when you leave transition for the run. That confidence alone is worth the session.
Brick workouts might not be the longest or hardest sessions in your training plan, but they're often among the most valuable.
They prepare you for one of triathlon's biggest challenges, build confidence, and help turn race-day surprises into familiar experiences.
If you're training for your first triathlon, don't overcomplicate them. Keep them simple, stay consistent, and focus on learning how your body responds. Alongside good nutrition and sleep, many athletes include compression boots as part of their post-workout recovery routine.
When race day arrives, and you head out onto the run feeling prepared instead of surprised, you'll be glad you made brick workouts part of your training.
