Rather than selling prepackaged workouts, this site breaks down core sprint training concepts —
what they are, why they exist, when to use them, and when not to.
Below is an example of how major elements are explained in context.
Extensive Tempo Phase
Extensive tempo runs form the aerobic base of sprinting — smooth, rhythmic efforts at
60–70% of max speed. To calculate target times, multiply your goal 100 m time for the season
by 1.4 (≈60%) or 1.3 (≈70%).
Tempo develops general endurance, reinforces efficient mechanics, and accelerates recovery
between high-intensity sprint sessions.
Tempo is not “slow sprinting” and it is not jogging.
Each repetition should feel controlled, elastic, and repeatable — upright posture,
consistent rhythm, relaxed arms, and calm breathing.
The objective is rhythm and efficiency, never fatigue or strain.
A key technical distinction during tempo work is foot contact strategy.
Unlike maximal sprinting, tempo runs should be executed with a
heel-to-toe landing, followed by a midfoot-driven take-off.
This promotes longer ground contact, reduced vertical force, and significantly lower stress
on the Achilles tendon and plantar structures.
This approach was consistently emphasized within the Charlie Francis system.
When clarified directly by senior CF coaches, tempo was described as deliberately using
a heel-first contact pattern — not as a flaw, but as a protective and economical feature
of submaximal running.
When executed correctly, this foot strike pattern allows athletes — including those managing
Achilles sensitivities — to build volume rapidly without irritation.
Progressions from 8 × 100 m with 60 s rest to
10 × 100 m with 30 s rest can occur safely within weeks,
provided rhythm and relaxation are preserved.
At peak aerobic tempo fitness, it was not uncommon for elite sprint groups to complete
2 × 10 × 100 m with approximately 10 minutes between sets.
Light calisthenics — commonly push-ups and abdominal work — were sometimes inserted between
repetitions or sets without compromising the intent of the session.
Over three weeks, the following progression gradually increases volume while shortening rest,
preparing the athlete for the classic
Charlie Francis 10 × 100 m / 30 s tempo benchmark.
3-Week Progression Plan
- Day 1: 12 × 60 m — Rest 60 s
- Day 2: 10 × 80 m — Rest 60 s
- Day 3: 8 × 100 m — Rest 60 s
- Day 4: 10 × 100 m — Rest 60 s
- Day 5: 4 × 3 × 100 m — Rest 30 s / 90 s between sets
- Day 6: 3 × 4 × 100 m — Rest 30 s / 90 s between sets
- Day 7: 2 × 6 × 100 m — Rest 30 s / 90 s between sets
- Day 8: (8 × 100 m), Rest 90 s, then (4 × 100 m)
- Day 9: 10 × 100 m — Rest 30 s
Rest or regeneration days are inserted between sessions to preserve movement quality.
Volumes should be adjusted downward if rhythm, posture, or relaxation degrade.
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