Introduction
Creatine is one of the most researched supplements in sports nutrition, but it is still often associated only with bodybuilding and strength sports. However, runners may also benefit from supplementation, especially during periods of higher training volume, intense sessions, and long races. Understanding how creatine works in the body helps determine when this strategy may make sense within endurance sports.
What is creatine?
Creatine is a compound naturally stored in the muscles and plays a direct role in rapid energy production through ATP. During high intensity exercise, it helps regenerate energy, supporting performance, recovery, and muscle power maintenance.
Although endurance running is primarily aerobic, several moments during a race require high energy demand in a short period of time, such as final sprints, climbs, pace changes, and interval sessions.
Can creatine benefit runners?
Recent studies have shown that creatine may provide indirect benefits for endurance athletes, especially regarding muscle recovery, strength preservation, and training tolerance.
Muscle recovery
Running training, especially high impact and high volume sessions, creates significant muscular stress. Creatine may help recovery between intense sessions, supporting better adaptation to training and reducing accumulated fatigue.
3 g/day≤Continuous creatine supplementation≤Support for strength, power, and muscle recovery
Strength and power maintenance
Even during long races, runners rely on muscular power at specific moments of the activity. This includes accelerations, climbs, pace changes, and final sprints.
Muscle mass preservation
During periods of high training volume or caloric restriction, runners may experience muscle mass loss. Creatine can be an interesting strategy to help maintain muscle mass during demanding training phases.
Possible cognitive support
Some studies also investigate the relationship between creatine and mental fatigue during prolonged exercise, especially under conditions of high physical stress and sleep deprivation.
Does creatine make runners gain weight?
This is still one of the main concerns among runners. Creatine may increase intracellular water retention, but this does not necessarily mean worse performance. In many cases, the weight increase is small and well tolerated, especially when supplementation is adjusted individually.
Additionally, the potential benefits for recovery and training quality may outweigh this effect for many athletes.
How should runners use creatine?
The most common strategy is continuous intake of 3 to 5 g per day. A loading phase is not mandatory, and daily consistency is considered one of the most important factors for gradually increasing muscle creatine stores.
Creatine can be used in different endurance modalities, such as:
• road running
• marathon
• trail running
• triathlon
• combined strength and endurance training
Practical application in endurance sports
Creatine does not replace carbohydrates, hydration, or race nutrition strategies, but it may act as a complementary support within a runner’s routine. Its use may be especially interesting during periods of intense training, strength blocks, long races, and phases with greater muscular stress.
Conclusion
Creatine may make sense for runners, especially when the goal involves muscle recovery, strength maintenance, and support for performance during intense training. Although it is still strongly associated with strength sports, current literature already demonstrates that endurance athletes may also benefit from supplementation when properly planned.
