Frank Shorter's 'Shorter Ladder' Workout for 5K Speed
A classic interval workout from Olympic marathoner Frank Shorter, designed to boost VO2 max and top-end speed for 5K and longer distances, is adapted for
Olympic marathon champion Frank Shorter used a specific ladder workout to build speed for races from 5,000 meters to the marathon. The session, detailed by Runner's World, involves running descending distances with minimal rest, aiming to increase a runner's VO2 max.
Shorter's weekly training was famously simple, built around two hard workouts, a long run, and easy mileage. His consistency over years led to a marathon personal best in 1972. The framework remains popular because it delivers results for both elite and amateur athletes.
The Workout Benefits
Shorter used his two weekly quality sessions to build raw speed, often finishing them completely exhausted. For today's average runner, the goal is different. You should push hard but finish feeling you could have done one more repetition. This approach minimizes injury risk and prevents excessive fatigue that could ruin subsequent training days.
This particular ladder session develops top-end speed. Shorter used it while training for 5,000m and 10,000m races, and even in the lead-up to marathons. It is designed to boost VO2 max, which helps runners sustain a faster pace in events like the 5K. It also trains the ability to produce a finishing kick in longer races.
The Session Structure
The workout's structure is straightforward. After a warm-up, runners complete a specific ladder of intervals. The prescribed paces start around 10K effort and build to 5K pace.
| Interval | Distance |
|---|---|
| 1 | 1600m |
| 1 | 1200m |
| 1 | 800m |
| 4 | 400m |
Shorter took less than a minute of rest between repetitions. He would build speed throughout the session, running each segment slightly faster. For the final 400-meter repeats, he aimed for his 5K race pace. Given his 5K time, this meant he ran those 400s fast.
Adaptation For Runners Today
The beauty of the workout lies in its simplicity and adaptability. Recreational runners are advised to ignore Shorter's specific times and base their efforts on their own current fitness levels. The key is to run the intervals hard, focusing on speed.
If true 5K pace is too demanding for the 400-meter repeats, runners can start at their 10K or even half-marathon pace. The goal is to gradually build up to faster speeds over several weeks of consistent training. The session is a staple on many athletics club schedules because it is straightforward and effective. Frank Shorter's legacy endures not only in his medals, but in the timeless, punishing simplicity of a ladder workout on the track.
