Running Workout Generator

Turning up at the track without a session in mind is the most common way quality training dies. This generator produces a complete structured workout from two decisions: the stimulus you want (recovery, endurance, marathon pace, threshold, VO₂max, speed, or a mix) and the phase of training you are in. Prescriptions are anchored to any recent race time via the Riegel power law and written in the time domain per Daniels’ quality windows, then converted to track-friendly distances at your own pace — a 4:45 marathoner gets 6 × 600 m where a 2:45 marathoner gets 6 × 1000 m, instead of both being handed the same session. Every workout states its physiological purpose with citations, respects an optional time budget, and exports as a Garmin .fit structured workout with pace-band targets, a share link that reproduces the exact session, or plain text.

Frequently asked questions

What workout should I do at the track?

Pick by stimulus rather than copying a session: VO₂max intervals (2–5 minute reps near current 5K pace) build aerobic power; threshold work (cruise intervals or tempo near 15K effort) raises the lactate ceiling; short reps near mile pace sharpen mechanics and turnover. If you run one quality session a week, alternating threshold and VO₂max work covers the most ground.

How do I get a structured workout onto my Garmin watch?

Download the .fit file, then either import it in Garmin Connect on the web (Training & Planning → Workouts → Import) and send it to your device, or plug the watch in over USB and copy the file into the GARMIN/NewFiles folder. It appears under Training → Workouts with pace targets for every step.

How many intervals should I do?

Count time, not reps: roughly 15–24 minutes of work at VO₂max intensity, 20–40 minutes at threshold, and 5–8 minutes of short fast reps is the productive range for most runners. Rep distance should scale so each rep lands in the right duration window at your pace — a slower runner running 600s gets the same stimulus as a faster runner running 1000s.

What pace should I run intervals at?

Anchor to a recent race, not a goal: interval (VO₂max) work sits near current 5K pace, threshold near 15K effort, repetition work near mile pace, and marathon-pace work at exactly that. Training paces derive from current fitness via the Riegel power law and get faster as your races do.

Sources

  • Daniels (2014). Daniels’ Running Formula, 3rd ed. Human Kinetics.
  • Billat (2001). Interval training for performance: a scientific and empirical practice. Sports Medicine.
  • Billat et al. (2000). Intermittent runs at the velocity associated with VO₂max. European Journal of Applied Physiology.
  • Gunnarsson & Bangsbo (2012). The 10-20-30 training concept improves performance and health profile. Journal of Applied Physiology.
  • Barnes & Kilding (2015). Strategies to improve running economy. Sports Medicine.
  • Casado et al. (2022). Training periodization, methods, intensity distribution, and volume in highly trained and elite distance runners. IJSPP.

Related glossary terms

  • Interval Training
  • Threshold Pace
  • VO₂max
  • Repetition (R) Pace
  • Fartlek
  • Strides
  • Cruise Intervals