Hill repeat workout calculator
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Hill repeat calculator
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Method Guide
Hill repeat workout guide
Hill repeats are one of the most efficient workouts for developing running economy, leg strength, and neuromuscular power. They provide high cardiovascular load with lower impact stress than flat intervals.
Grade adjustment science
Energy cost increase per grade
Adjustment = 1 + (grade% × 0.017)
Energy cost increases approximately 1.7% per 1% grade increase (Minetti et al., 2002). An 8% hill requires about 13.6% more energy than flat running at the same pace.
Hill repeat protocols
| Type | Duration | Grade | Develops |
|---|---|---|---|
| Short hills | 30-60 sec | 8-12% | Power, running economy |
| Medium hills | 60-120 sec | 6-10% | Strength endurance |
| Long hills | 2-4 min | 4-8% | Lactate threshold |
Related tools
Use with Grade-Adjusted Pace, Training Zones, and VDOT Calculator.
FAQ
How steep should hill repeats be?
Most coaches recommend 6-10% grade for general running development. Steeper hills (10-15%) develop more strength but limit the running-specific neuromuscular benefit.
How long should hill repeats be?
Short hills (60-90 seconds) develop power and running economy. Longer hills (2-4 minutes) develop lactate threshold and aerobic capacity. Most runners benefit from 60-120 second efforts.
How often should I do hill repeats?
Once per week during a hill phase (4-8 weeks). Hill repeats can replace one speed session per week. Allow 48-72 hours of easy running after a hill session.
Are hill repeats better than flat intervals?
Hill repeats develop similar cardiovascular fitness with less impact stress and greater strength development. They are complementary to flat intervals, not a replacement for all speed work.
What effort level for hill repeats?
Aim for 85-95% of max heart rate, similar to tempo-to-threshold effort. Focus on consistent effort (not pace) across all repeats. The hill naturally elevates effort.
How should I recover between hill repeats?
Jog or walk down the hill. Recovery should be long enough to complete the next repeat at target effort. Typically 1.5-2x the uphill duration.
References
Continue with a related calculator
Grade Adjusted Pace
Convert uphill and downhill pace to a flat-ground equivalent.
Training Zones Calculator
Build heart rate and pace zones for aerobic, threshold, and VO2max work.
Calories Burned Calculator
Estimate energy expenditure for running and walking with terrain adjustments.
VDOT Calculator
Turn a recent race result into training paces and fitness context.