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Pace Breaker Run

4 minute read

Quick Intro

Pace Breaker Run turns an easy jog into a game of reactions. Two partners jog side by side at a comfortable pace. One is the caller, the other the runner. At moments the runner cannot predict, the caller shouts “surge”, and the runner sprints. A few seconds later, the caller shouts “ease”, and the runner drops back to an easy jog. After an agreed time or distance, they swap.

It is a fartlek, the Swedish word for “speed play”, built into a partner game. Mixing easy running with sudden bursts trains both the steady aerobic system and the faster, harder efforts, and the unpredictability is what makes it work. The runner cannot pace themselves for a surge they do not know is coming.

There is no winner. Each partner gets a turn as runner and a turn as caller. Sprinting technique, a tall posture and a powerful arm drive, is taught at Sprinting. This guide covers the partner game: the calls, keeping surges short, choosing the route and swapping roles.

What You’ll Need

  • Two people.
  • A clear, flat running route: a track, a park path or a quiet loop.
  • A watch or phone to time the turns.

How It Works

  1. Agree the route, the two calls and how long each turn lasts, for example ten minutes.
  2. Warm up together with five to ten minutes of easy jogging.
  3. Jog side by side at an easy pace.
  4. The caller shouts “surge” at an unpredictable moment.
  5. The runner reacts straight away and sprints.
  6. After a few seconds, the caller shouts “ease”, and the runner drops to an easy jog.
  7. The runner eases until the caller is level again, then the pair jogs on together until the next call.
  8. After the agreed time, swap roles.

Making the Calls

The caller’s job is to keep the runner guessing while keeping the run sensible:

  • Vary the gaps. One surge after 30 seconds, the next after two minutes. A regular pattern lets the runner predict it.
  • Keep surges short. About 5 to 10 seconds. Long surges turn into a sprint session.
  • Call loudly and clearly. The runner may be several metres ahead by the end of a surge.
  • Read the runner. If they are tiring badly, leave longer gaps between surges.

Keeping Together

The caller keeps jogging at an easy pace while the runner sprints, so a gap opens. On “ease”, the runner drops to a gentle jog and lets the caller catch up. This is why the surges stay short: a 10-second surge keeps the runner within shouting distance, and the next call is easy to hear.

Choosing the Route

The route matters, since surges come without warning:

  • Flat and even. No potholes, roots or loose gravel.
  • Clear of traffic. No crossings mid-surge.
  • Wide enough. Room for both partners to run side by side, with space to overtake walkers safely.

The caller is responsible for never calling a surge into an unsafe section: a corner, a busy crossing, a downhill or a crowded stretch. Wait until the path ahead is clear.

Making It Fair

The caller sets the surges for the runner in front of them. For a less experienced runner, surges are shorter and further apart. For a fitter one, they can be a little longer and more frequent. Talk about it at the swap. Training With a Friend covers more on shaping one game for two partners.

Staying Safe

  • Warm up fully. Sprinting from a cold start is a common cause of pulled hamstrings.
  • No surges into hazards. The caller waits for a clear stretch.
  • Calls are words, nothing more. No misleading calls meant to trip or startle the runner.
  • Stop for pain. A sharp pull in the back of the leg ends the run.

Common Mistakes

  • Surges that are too long. They wear the runner out and stretch the pair too far apart.
  • A predictable rhythm. Every 60 seconds is easy to guess.
  • The runner holding back. Each surge is a real sprint, as hard as feels safe.
  • Skipping the warm-up. Sudden sprints need warm muscles.

Fitting It Into a Session

Pace Breaker Run can be a full session on its own: a warm-up, two turns of ten minutes each and a cool-down jog. It also works as the conditioning part of a mixed session. Once or twice a week is plenty. Building a Partner Session has more on combining running with other work.

Getting Better Over Time

Over a few weeks, the runner’s reaction gets quicker and the surges feel less punishing. The caller can lengthen the turns, add a few more surges or make the gaps between them more unpredictable. A runner who can respond to every call with a sharp surge at the end of a ten-minute turn has good fitness and fast reactions.

FAQ

How long should a surge be?

About 5 to 10 seconds. Short enough to stay close to your partner, long enough to feel like a real effort.

Does the caller run too?

Yes, at an easy jog the whole time. After each surge, the runner jogs gently until the caller draws level.

Can we do it on a treadmill?

Not easily, since the pace has to change on command. A track or park path is better.

Related to Sprinting, Freeze Call Sprint and Sprint Interval Loop.