The Benefits of Tapering for Marathon Runners

Chelmsford Physio • March 25, 2026

Tapering is a critical phase in the training cycle of a marathon runner, often seen as the period leading up to the race where mileage is reduced to allow the body to recover and prepare for peak performance. This blog explores the benefits of tapering and its impact on marathon performance.


Understanding Tapering

Tapering generally refers to the systematic reduction of training volume and intensity in the weeks leading up to a race. According to a study by Smith et al. (2013), a well-structured taper can lead to improved performance due to physiological adaptations and mental readiness (Smith, R., et al., 2013). The duration and extent of the taper vary depending on the athlete's training background, race distance, and personal preferences.


Physiological Benefits

1. Enhanced Recovery: The primary goal of tapering is to facilitate recovery from the accumulated fatigue of training. During this period, muscle glycogen stores are replenished, muscle fibers repair, and joint inflammation subsides (Mujika & Padilla, 2000). Research highlights that runners who effectively taper can experience an increase in muscle glycogen levels, which is crucial for endurance events like marathons (Jeukendrup & Killer, 2010).


2. Improved Aerobic Capacity: Tapering has been shown to increase aerobic performance. A systematic review by Bosquet et al. (2007) found that tapering significantly enhances VO2 max and running economy, which are critical for distance running (Bosquet, L., et al., 2007). These physiological improvements enable runners to maintain a higher pace over long distances.


3. Increased Mental Toughness: The psychological component of tapering is equally important. The reduction in training load allows runners to mentally prepare for the race, boosting confidence and reducing anxiety. According to a study by Dintiman (1981), tapering also leads to improved focus and mental clarity during races (Dintiman, G. B., 1981).


Performance Outcomes

Research indicates that tapering can yield significant performance benefits. A meta-analysis conducted by Martin et al. (2011) concluded that well-executed tapering strategies can improve performance by 2% to 10% in distance runners (Martin, L., et al., 2011). This improvement can be the difference between achieving a personal best and falling short.


Practical Tapering Strategies

1. Duration: Most tapering periods last between 1 to 3 weeks before the marathon. An optimal duration allows the body to recover without losing the training adaptations gained during the build-up (Mujika, I. & Padilla, S., 2000).


2. Reduction in Mileage: A common approach is to reduce mileage by 20-50% during the tapering phase, while maintaining some intensity in workouts to enhance neuromuscular readiness (Donnelly & Henneman, 1990).


3. Nutrition: Adjusting nutrition during the taper is essential. Increasing carbohydrate intake helps to maximise glycogen stores (Jeukendrup, A. E., & Killer, S. C., 2010). Consulting a sports nutritionist can help tailor dietary needs effectively.


Conclusion

Tapering is an essential aspect of marathon training that offers myriad benefits, from physiological recovery to enhanced performance outcomes. By strategically reducing training load, runners can optimise their readiness for race day, ultimately leading to improved performance. Implementing effective tapering strategies can be the key to achieving personal bests and successfully crossing the finish line.


Chelmsford Physio

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