Almost every good training plan has them in it, and almost nobody does them properly.
Strides are short, controlled accelerations, usually somewhere between 15 and 30 seconds, run at a fast but relaxed effort with a full recovery in between. They sit at the end of an easy run or before a workout. They are not sprints. They are not a session in their own right. They take about six minutes and most runners skip them because six minutes of feeling slightly silly in a car park seems optional.
It is not optional. Strides are as much a staple of distance training as the easy run and the threshold workout, which is why you will see them being run by twelve-year-olds at a school track meet and by Olympians warming up for a final. Same drill, same purpose, wildly different paces.
What a stride actually is
A stride is a gradual acceleration to near-top-end speed, held briefly, then a gradual deceleration. The whole thing is smooth. There is no explosive start and no lunging at the end.
The shape of it matters more than the numbers. You spend the first few seconds building, the middle section at a quick, controlled pace, and the last few seconds easing off. If someone filmed you, the change of pace should be hard to spot in any single second.
A useful test: you should be able to hold the fast part without your jaw clenching, your shoulders lifting or your arms crossing your body. The moment the form falls apart, you have gone past the point where the stride is doing its job.
How to run one
Here is the version that works for almost everyone:
- Finish an easy run as normal.
- Find a flat stretch of about 100 metres. Grass, track or quiet pavement all work.
- Build smoothly over the first three or four seconds.
- Hold a fast, relaxed pace for the middle ten to fifteen seconds.
- Ease off over the last few seconds. Do not slam on the brakes.
- Walk or jog back. Take a full minute, sometimes more.
- Repeat four to six times.
That is it. Six strides, sixty to ninety seconds of actual fast running, done twice a week.
The recovery is the part people get wrong. Strides are not a conditioning session and they are not meant to leave you breathing hard. If you are gasping by the fourth one, your recoveries are too short or your efforts are too hard. You should finish the set feeling springier than when you started, not emptier.
Why they work
Four things, roughly in order of how quickly you notice them.
Coordination. Running fast is a skill, and skills degrade when you never practise them. If every run you do sits in the same narrow pace band, your body forgets how to move quickly and efficiently. Strides are the reminder.
Form. At easy pace you can get away with a shuffle, a short stride length and lazy arms. Speed exposes all of it. Strides quietly clean up your mechanics because bad mechanics simply do not work at pace.
Power. Short, fast efforts recruit muscle fibres that easy mileage never touches, and they load tendons in a way that builds elasticity. That is where the springy feeling comes from.
Everything else feels easier. This is the one runners report most. When your top-end speed rises, your race pace becomes a smaller fraction of it. A 7:30 mile feels very different when your quick pace is 5:30 than when it is 6:15, even though the 7:30 has not changed.
When to do them
Two or three times a week is plenty.
After an easy run is the default, and the best starting point. You are warm, the session is over, and there is no pressure on the legs.
Before a workout or a race, at the end of your warm-up, to switch the nervous system on before the hard running begins. Four is usually enough here.
On the day before a race, a handful of strides keeps you sharp without adding fatigue. They are one of the few fast things it is sensible to do the day before.
Avoid them the day after a hard session if your legs are still heavy, and avoid finishing a long run with them when you are genuinely tired. Strides done on wrecked legs teach you to run badly at speed, which is worse than not doing them.
The mistakes worth avoiding
Treating them as sprints. All-out efforts turn a neuromuscular drill into a hard workout, with the injury risk that comes with it. Fast and relaxed, not maximal.
Cutting the recovery. A stride with forty seconds of jogging afterwards is an interval session in disguise. Take the full minute.
Doing them on tired legs. The point is to practise good, fast running. You cannot practise good, fast running when you cannot hold form.
Doing them uphill or on a technical surface. Save the gradient for hill sprints, which are a different tool for a different job.
Skipping them for months and then doing twelve. Start with four. Add one every couple of weeks if you want more.
Where they fit in a week
A straightforward, uncomplicated week for someone training for a half marathon or a marathon might look like this: strides after Tuesday's easy run, the main workout on Thursday, strides again as part of Saturday's warm-up, long run on Sunday.
That is six to twelve short accelerations across seven days. It costs you almost no time and almost no fatigue, and it is one of the highest-return things an ordinary runner can add to a week of training.
If you have a race in the calendar and you are not doing them, this is the easiest thing on your entire plan to fix. And if you do not have a race in the calendar yet, that is the other easy problem to solve.
Anyone can go the distance. Stride into a reason.