Fartlek Fun: Speed Play Endurance Run

Fartlek, or "speed play" in Swedish, is an unstructured running workout that blends continuous running with bursts of varying intensity. This session will help you improve your pace changes and build tolerance for sustained effort.

Warm-up

Start with a gentle warm-up to prepare your muscles and cardiovascular system for the main workout. Focus on dynamic movements.

• Light Jogging: Initiate blood flow and gently raise your heart rate. Maintain a conversational pace.
• Dynamic Stretches: Prepare your joints and muscles. Focus on movements that mimic running.

Workout

The main fartlek block involves continuous running with self-selected bursts of speed and periods of recovery. The key is to run by feel, pushing when you can and recovering as needed, but always moving forward.

• Continuous Run: Maintain a steady, comfortable pace as your baseline.
• Speed Bursts: Increase your speed to a challenging but sustainable pace for 1-5 minutes. Think of it as pushing your effort to an 8 out of 10. The duration of these bursts is up to you, reacting to how you feel.
• Recovery Sections: After a speed burst, return to your comfortable base pace or even an easy jog for 2-4 minutes. This isn't a complete stop, just a chance to catch your breath and prepare for the next burst.
• Vary the Terrain/Effort: If outside, use landmarks (e.g., run fast to the next lamppost, recover to the end of the block). On a treadmill, vary your speed and incline.

Cool-down

Gradually bring your heart rate down and allow your muscles to recover. Static stretches are beneficial here.

• Easy Jog/Walk: Slowly decrease your pace to a walk. Focus on deep, calm breaths.
• Static Stretches: Hold each stretch for 20-30 seconds. Focus on major muscle groups used in running: quads, hamstrings, calves, and hip flexors.

Coaching notes

Listen to your body. Fartlek is about responding to how you feel, not hitting specific pace targets. The goal is to build your body's ability to recover on the move and to handle changes in effort level. Don't be afraid to experiment with different burst durations and recovery times. Your effort levels for the speed bursts should feel challenging, not all-out sprints. You should be able to maintain proper running form throughout.

Scale it

• Easier: Reduce the duration and intensity of speed bursts. Increase the recovery periods between bursts, or make them very easy jogs. Focus on a greater percentage of easier running.
• Harder: Increase the duration and intensity of your speed bursts. Decrease the duration of your recovery periods, or make them faster. Aim for a higher average pace for the entire session.