Speed Endurance Training: Running Faster for Longer

Introduction

Running fast once is relatively easy. Running fast 35 times across 90 minutes, with only incomplete recoveries between efforts, is an entirely different physiological challenge and it is precisely what elite football demands. Speed endurance is the capacity to repeat sprint efforts with minimal decay in quality. It is arguably the most football-specific physical quality that exists, and it is the one that most players, at both elite and amateur levels, undertrain. Understanding what it is physiologically, and how to develop it, is essential for any serious football conditioning programme.

The Science

Speed endurance sits at the intersection of two physiological systems:

The PCr (phosphocreatine) system powers the initial sprint, maximally, for up to 8–10 seconds. The rate of PCr resynthesis during incomplete recovery determines how much power is available for the next sprint.

The aerobic system drives PCr resynthesis between sprints. This is the mechanism that connects VO2max to repeated sprint performance, a player with higher aerobic capacity restores PCr faster and maintains sprint quality across more repetitions.

Glycolytic capacity determines how well the body sustains effort when PCr is not yet fully restored, producing ATP rapidly from glucose but generating lactate as a byproduct. Players who can buffer and clear lactate efficiently maintain a higher “floor” of performance during the incomplete-recovery sprints that characterise football.

Speed endurance is trained by:

1. Repeated sprint ability (RSA) sessions: Multiple maximum-effort sprints (20–40m) with brief recovery (20–45 seconds between efforts) over 6–10 repetitions. The aim is to maintain sprint quality across all efforts, not just the first few.
2. Speed endurance production: Longer, near-maximal efforts (60–200m) with longer recovery, targeting the glycolytic system and lactate tolerance. 3–5 repetitions of 100–200m at 90–95% max speed.
3. Speed endurance maintenance: Medium-distance efforts (60–100m) with moderate recovery, designed to maintain sprint capacity under cumulative fatigue. Game-like in structure.

The critical distinction: RSA training develops repeated sprint quality (how much you slow down sprint-to-sprint); speed endurance production develops the capacity to sustain high-intensity running for longer before the decline begins.

What Research Says

Impellizzeri et al. (2008) compared RSA performance between elite and sub-elite Italian football players across a battery of repeated sprint tests and confirmed that RSA distinguished playing level better than single-sprint maximal speed. Elite players did not sprint faster on the first effort, they maintained sprint quality longer across efforts, with significantly less percentage decay.

Spencer et al. (2005) analysed the recovery patterns between sprints in elite Australian rules footballers (a sport with highly comparable repeated sprint demands to football), confirming that PCr resynthesis rate, driven by aerobic capacity, was the primary determinant of inter-sprint recovery quality. Players with higher VO2max had faster PCr resynthesis, directly explaining their superior RSA performance.

Mohr et al. (2007) published specific speed endurance training data in recreationally trained male subjects in American Journal of Physiology, demonstrating that 6–8 weeks of speed endurance maintenance training (8–10 × 30-second runs at near-maximal speed) significantly improved both Yo-Yo IR1 performance and match running intensity in the final 15 minutes. Speed endurance training directly improved the match-specific variable it was designed to address.

Did You Know? Coaches often observe that the best-conditioned players in their squad are not necessarily the fastest on a single sprint test, they are the ones whose 10th sprint is closest in time to their 1st. A player who runs 3.0 seconds over 20m on sprint 1 and 3.1 seconds on sprint 10 is a better football athlete than a player who runs 2.8 seconds on sprint 1 and 3.3 seconds on sprint 10, even though the second player has more raw speed. Football is played across the full sprint spectrum, not just the first effort.

Applied to Football

Structuring speed endurance training within a weekly programme:

1. Two speed endurance sessions per week during pre-season. One RSA-focused (short distances, many repetitions) and one speed endurance production session (longer distances, fewer reps, maximum quality). This is the phase for building the quality, not in-season.
2. One maintenance session per week in-season. Enough to preserve the gains built in pre-season without creating excessive fatigue before matches. 6–8 × 20m sprints with 30-second recovery fits within an MD-3 session.
3. Never use HSR distance as the only metric. GPS-measured HSR distance does not capture sprint quality, two players can cover the same HSR volume with very different degrees of speed decay across the match. Time-gated sprint outputs are a superior RSA proxy.
4. Design drills that create RSA demands. Shuttle-run games, transition drills with compulsory sprints, and chasing/escaping SSGs naturally generate repeated sprint patterns within football-specific contexts.
5. Develop aerobic base alongside speed endurance. VO2max improvement directly increases RSA capacity. These are not competing training goals, aerobic development is the foundation of speed endurance performance.

The Short Version

• Speed endurance is the capacity to repeat sprint efforts with minimal quality decay across a match
• PCr resynthesis rate (driven by aerobic capacity) determines inter-sprint recovery and RSA quality
• RSA distinguishes elite from sub-elite players more than single-sprint maximal speed
• Two pre-season speed endurance sessions (RSA + production) build the quality; one in-season session maintains it
• Aerobic development and speed endurance training are complementary, not competing, priorities

References

• Impellizzeri, F. M., Rampinini, E., Castagna, C., Bishop, D., Ferrari Bravo, D., Tibaudi, A., & Wisloff, U. (2008). Validity of a repeated-sprint test for football. International Journal of Sports Medicine, 29(11), 899–905.
• Spencer, M., Bishop, D., Dawson, B., & Goodman, C. (2005). Physiological and metabolic responses of repeated-sprint activities. Sports Medicine, 35(12), 1025–1044.
• Mohr, M., Krustrup, P., Nielsen, J. J., Nybo, L., Rasmussen, M. K., Juel, C., & Bangsbo, J. (2007). Effect of two different intense training regimens on skeletal muscle ion transport proteins and fatigue development. American Journal of Physiology, 292(4), R1594–R1602.

Next in Series: Small-Sided Games: The Swiss Army Knife of Football Training

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Written by Hüseyin Akbulut, MSc Coach

Hüseyin Akbulut is the founder of Sporeus and author of THRESHOLD (EŞİK), a 540-page Turkish-language book on endurance science.

• 540pp THRESHOLD Book
• MSc Sport Sciences
• Marmara University

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