Complete Running Calculator Suite 2026
Professional running calculators for pace, training zones, race predictions, and performance analysis. Train smarter with science-based tools used by coaches and athletes worldwide.
Essential Running Calculators
Running Pace Calculator
Calculate your pace from distance and time. Get splits, speed conversions, and training pace recommendations.
Race Time Predictor
Predict your finish times for 5K, 10K, half marathon, and marathon based on recent race performance.
VO2 Max Calculator
Calculate your aerobic capacity using Cooper test, running performance, or Rockport walk test methods.
Heart Rate Zone Calculator
Calculate your 5 heart rate training zones using age-based formulas or measured max HR for optimal training.
Cooper Test Calculator
Calculate VO2 max from 12-minute run distance. Includes fitness level classification and improvement tracking.
Treadmill Pace Calculator
Convert between treadmill speed (mph/kph) and running pace (min/mile or min/km). Includes incline adjustments.
The gear these numbers assume
Every pace, zone and power figure on this page assumes something is measuring it. These are the three that cover running, cycling and the threshold work in between.
Garmin Forerunner 965
Multisport with the training-load and threshold metrics most of these calculations assume you can actually see day to day.
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COROS APEX 2 Series GPS Watch
Sapphire titanium and the longest battery in its class, which is the deciding feature once sessions run past a few hours.
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Favero Assioma Uno Power Meter Pedal
Single-sided pedal power, the cheapest honest way to start training with watts instead of estimating from heart rate.
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Training & Analysis Tools
Zone 2 Training Calculator
Find your optimal Zone 2 heart rate for aerobic base building and fat oxidation training.
Lactate Threshold Calculator
Calculate LTHR for more accurate training zones. Better than age-based estimates for experienced runners.
Calories Burned Calculator
Calculate calories burned running based on distance, pace, weight, and terrain. Includes METs calculation.
Training Load Calculator
Calculate training stress score (TSS) and training load to optimize recovery and prevent overtraining.
Recovery Calculator
Calculate optimal recovery time between workouts based on training intensity and duration.
Run-Walk Calculator
Calculate optimal run-walk intervals for beginners and race strategy. Includes Galloway method ratios.
2026 Training Plans
Beginner Runner Plan
- • Start with run-walk intervals
- • Build to 30-minute continuous runs
- • Focus on aerobic base development
- • Progress to 5K race distance
5K to Marathon Plan
- • Progressive distance building
- • Pace-specific training zones
- • Structured workout progressions
- • Race-day strategy planning
Performance Optimization
- • VO2 max improvement protocols
- • Lactate threshold development
- • Speed and power training
- • Advanced periodization
Related Calculator Suites
Running Tools Hub
Quick access to the most popular running calculators with training guides and resources.
Cycling Calculator Suite
Complete collection of cycling calculators: FTP, power zones, gearing, watts to calories, and more.
Heart Rate Training Hub
Complete heart rate training resource with calculators, zone explanations, and training guides.