Brick Workout Ratio Planner Calculator

Units

Known Segment

Repeats Number of brick blocks

Bike time (hh:mm:ss) Required when Bike known

Run time (hh:mm:ss or mm:ss) Required when Run known

Ratio (Run : Bike)

Example 1:4 means 1 minute run per 4 minutes bike

Intensity scaling (%) Run side scaled by intensity

Bike speed (km/h) Used for distance estimate

Run pace (min/km) mm:ss per km

Tip Switch intensity to simulate race pace or easy day. The ratio is scaled on the run side.

Results

Mode: Bike known
Effective ratio (Run:Bike): 1.00 : 4.00
Repeats: 1

Bike per block

45:00

22.50 km

Run per block

11:15

2.25 km

Bike total

45:00

Run total

11:15

Total session time

56:15

What is Brick Workout Ratio?

Brick workout ratio describes the planned relationship between cycling time or distance and running time or distance within one combined session. Athletes use ratios to control load mimic race demands and balance fatigue. A common approach sets run minutes relative to bike minutes then adjusts for intensity goals terrain and training phase. Ratios can guide pacing inform transition practice reduce injury risk and improve endurance specificity.

FAQs

What ratio should a beginner start with?

Many start with approximately 1 to 5 run to bike by time. Keep intensity easy and progress gradually. Adjust with the slider until recovery is comfortable.

Does the intensity control change both run and bike?

The calculator scales the run side of the ratio. Higher values increase the run share while lower values emphasize cycling. You can tune it to match training goals.

How do I use repeats?

Repeats multiply a single brick block. For example 3 repeats of 15 minutes bike and 5 minutes run produce 45 minutes bike and 15 minutes run in total.

Can I plan by distance instead of time?

Enter bike speed and run pace. The tool estimates distances from the planned times using your speed and pace so you can target distance based sessions.

Is this suitable for race specific preparation?

Yes. Adjust the ratio and intensity to mirror event demands. Progress toward race pace gradually and maintain recovery days to consolidate adaptations.