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The Art Of The Fartlek

  • By Courtney Baird
  • Published May. 9, 2013
  • Updated May. 9, 2013 at 3:05 PM UTC
Throw some fartleks into your next workout to build some speed. Photo: www.shutterstock.com


McCarey also makes use of the environment during certain fartlek workouts. For example, if it’s ever raining or windy during a fartlek workout, McCarey will have his athletes run 90-second intervals with the wind, effectively giving their bodies a speed boost and teaching them how to efficiently run at a pace they couldn’t maintain without the aid of the wind. His athletes will then jog back to the place they started the first 90-second interval, so that they can use the wind each time.

Like McCarey, McKeeman also uses fartlek workouts during more structured phases of training, with his athletes usually completing one session a week. Both coaches believe pace control during fartlek workouts is key, and beginners often run their fartleks too hard.

“Most beginners do the speed phase of the fartlek too fast, which can force them to walk during the workout,” McCarey says. “But this is actually the opposite idea behind a fartlek. You should never, ever walk.”

Nevertheless, if a runner makes a pacing mistake and is reduced to a walk, McKeeman says to just chalk it up to a learning experience.

“People tend to think they’re not running hard enough when they’re not seeing splits,” McKeeman says. “They run too hard and then they’re trashed at the end of the fartlek, but the important part is they learn from this, so that when they’re in a race they’ll have a better feeling for how hard they should be going.”

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McCarey says that athletes who lack a strong running background shouldn’t do more than 5 x 2-minutes hard with 90 seconds of easy jogging in between when first starting out. National class age-group runners, on the other hand, will do upwards of 3 x 10 minutes with 5 minutes of easy jogging in between. The pace should be one they can maintain throughout the workout, but the effort will get significantly harder as the workout progresses.

As a general rule, McCarey says that intervals of 2 to 4 minutes should be countered with 90 seconds of easy jogging, intervals of 5 minutes should be countered with 2 minutes of easy jogging, and intervals of 10 minutes should be countered with 5 minutes of easy jogging. McCarey likes to end every fartlek workout with four to six 40-second strides over a small hill, with 1:20 of easy jogging in between.

These strides — short pickups performed slightly faster than 5K race pace — teach runners to hold their form at the end of the race, and the hill improves the athlete’s overall strength and helps create a mini-core workout.

Every four weeks or so, McCarey also throws a timed mile to the end of his fartlek session, where all his runners line up at the beginning of a pre-measured mile and run the full distance as fast as they can.

“This is where everyone wants to go all out,” McCarey says. “The mile is used as a measuring stick, so that athletes can see if they are improving.”

Practice fartleks in this way, and you’ll be seeing your next PR in no time.

Sample Fartlek Workouts

Do these workouts once every other week for 2-8 weeks before a given race.

Marathon Training: 5 x 5 minutes at marathon race pace with 5 minutes of easy jogging in between.

Half-Marathon Training: 8 x 3 minutes at half-marathon race pace with 3 minutes easy jogging in between.

Speed Builder:8-10 x 30 seconds hard (around 10K race pace) with 2:30 minutes easy running in between.

Speed Endurance Generator: 5:00-4:00-3:00-2:00-1:00 pickups with half time recovery in between. Start at 5K pace and get progressively faster with each pickup.

Race Tune-Up: 2 x 4 minutes at 10K pace with 2 minutes easy jogging in between, 2 x 3 minutes at 5K pace with 2 minutes jogging in between, 2 x 2 minutes faster than 5K pace with 2 minutes easy jogging in between.

This piece first appeared in the April 2013 issue of Competitor magazine.

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