Why Many Runners Panic When Their Pace Slows Late in Races
Last Update August 19, 2026 by Etienne Durocher
One of the most common moments of panic in endurance racing happens when a runner glances at their watch late in a race and sees a pace they do not want to see.
Perhaps the goal pace was 5:00 per kilometre and the watch suddenly shows 5:10.
Maybe the athlete was averaging 4:15 per kilometre and now sees 4:25.
Sometimes the change is surprisingly small.
The emotional reaction is often much larger.
Within seconds, many runners begin assuming the worst. They convince themselves they are falling apart. They worry that months of preparation are slipping away. They start calculating finish times, personal records, qualification standards, and race goals. What began as a small change in pace quickly becomes a mental crisis.
Ironically, the pace slowdown is often not the biggest problem.
The panic is.
One of the most important lessons endurance athletes eventually learn is that pace fluctuations are a normal part of racing. Even exceptionally well-executed races rarely unfold as perfectly as athletes imagine during training. Conditions change. Fatigue accumulates. Terrain varies. Fueling influences performance. The body continuously adjusts to the demands being placed upon it.
The athletes who perform best are not necessarily the athletes who avoid every slowdown.
More often, they are the athletes who respond intelligently when slowdowns occur.
Understanding why runners panic and how to avoid that reaction can dramatically improve race execution.
If you are building your overall training structure, begin with: How To Pace a Marathon Properly
What You Need to Know First
One reason pace slowdowns feel so threatening is that runners often interpret them incorrectly.
Most athletes view pace as a direct reflection of fitness. If pace slows, they assume fitness is disappearing. If pace drops significantly, they assume the race is failing.
The reality is far more nuanced.
Pace reflects performance at a specific moment in time. It does not automatically explain why that performance is occurring. A slower kilometre may result from fatigue. It may also result from wind, heat, terrain, fueling decisions, hydration status, or countless other variables.
This distinction matters because solutions depend on understanding the cause.
Imagine two runners who both slow by ten seconds per kilometre during the final hour of a marathon.
One athlete is experiencing severe glycogen depletion.
The other is running into a sustained headwind.
The pace data looks identical.
The underlying situation is completely different.
This is one reason experienced racers learn to avoid immediate conclusions. Rather than reacting emotionally to the number on the watch, they begin asking questions about what might actually be happening.
That approach often leads to much better decisions.
For a deeper understanding of how pace and physiological effort interact, Why Heart Rate and Pace Don't Always Match provides important context for many of the concepts discussed throughout this article.
Why Slowing Down Feels So Personal
One interesting aspect of endurance sports is that athletes often attach emotional meaning to pace.
The pace is not simply a number.
It becomes evidence.
Evidence that training worked.
Evidence that fitness improved.
Evidence that goals remain achievable.
When that number begins moving in the wrong direction, many runners experience something that feels remarkably similar to losing control.
The pace becomes a threat rather than information.
This reaction is understandable. Most athletes invest months preparing for major races. They make sacrifices. They complete difficult workouts. They organize their schedules around training. By race day, significant emotional investment exists.
The problem is that emotional investment can make objective decision-making more difficult.
Instead of evaluating the situation calmly, the athlete begins reacting emotionally. They become focused on protecting a number rather than understanding what the body is communicating.
This often leads to poor decisions.
The slowdown itself may be manageable.
The response to it frequently creates bigger problems.
The Mistake of Fighting Every Slowdown
One of the most common pacing errors occurs when runners attempt to immediately eliminate every reduction in pace.
The watch displays a slower kilometre.
The athlete accelerates.
Heart rate increases.
Energy expenditure increases.
The effort required to maintain pace increases.
What initially represented a small slowdown now becomes a larger physiological cost.
This pattern can continue repeatedly throughout the final stages of a race.
The athlete spends enormous amounts of energy fighting every pace fluctuation. Rather than preserving resources for the finish, they continuously spend those resources trying to maintain an exact number.
Eventually the body stops cooperating.
The slowdown becomes larger.
Fatigue becomes more severe.
The athlete experiences the very collapse they were attempting to avoid.
This is one reason many experienced marathoners focus on effort rather than pace during difficult portions of a race. Effort remains under the athlete's control. Pace often does not.
When conditions become challenging, protecting effort frequently produces better outcomes than obsessively protecting pace.
To go deeper into this aspect of training, read: Pacing Tools For Runners
Why Small Slowdowns Are Often Normal
One misconception in endurance sports is the belief that successful races should involve perfectly stable pacing.
Insight
They struggle because their footwear is not aligned with their workload.
Guide Here
In reality, even excellent races contain fluctuations.
A slight pace reduction during the final stages of a marathon does not automatically indicate failure. In many cases, it simply reflects the reality of prolonged endurance exercise. The body becomes fatigued. Resources become limited. Maintaining identical performance becomes increasingly difficult.
This does not mean runners should expect dramatic slowdowns.
It means they should understand the difference between normal fatigue and genuine problems.
A runner who slows slightly during the final ten kilometres of a marathon may still be executing an outstanding race. The athlete who interprets that slowdown as disaster may create far more damage through emotional decision-making than the slowdown itself ever would have caused.
Perspective matters.
The most successful racers understand that perfection is rarely required.
Good decisions usually matter more.
Many runners panic when pace begins slowing because they assume every race should produce a negative split. If you haven't already read it, Negative Splits: Smart Strategy or Overrated Advice? explores why successful racing is often more complicated than simply running the second half faster than the first.
What Long-Distance Racing Continues to Teach
One lesson that repeatedly appears in ultramarathons, 24-hour races, and events such as Spartathlon is that performance rarely follows a straight line.
Energy fluctuates.
Motivation fluctuates.
Pace fluctuates.
The athletes who survive and thrive in these environments learn something important. They stop reacting emotionally to every change.
Instead, they begin looking for trends.
Is the slowdown temporary?
Is it related to terrain?
Is nutrition contributing?
Is hydration contributing?
Can the issue be addressed?
This mindset creates a tremendous advantage because it replaces panic with problem-solving.
A slower pace becomes information rather than evidence of failure.
The same principle applies in marathon racing.
Athletes who remain calm generally make better decisions.
Better decisions usually produce better outcomes.
What Blagoy's Spartathlon Experience Reinforced
One lesson from Blagoy's Spartathlon experience involved the relationship between pacing, expectations, and emotional resilience.
As the race unfolded, several challenges accumulated. Early pacing decisions created additional physiological demands. Heat became a factor. Energy management became increasingly important. Eventually, the mental burden of those accumulating stresses became as significant as the physical burden.
This illustrates an important point.
Physical challenges and psychological responses are closely connected.
When runners begin viewing every pace slowdown as evidence that the race is failing, mental fatigue accelerates. Confidence decreases. Decision-making quality often declines.
Conversely, athletes who remain objective tend to preserve mental resources. They continue evaluating options rather than surrendering to frustration.
The pace may still slow.
The race often remains salvageable.
That distinction can be enormously important.
Practical Tips for Runners
The first recommendation is to expect some pace variability during long races. Understanding that fluctuations are normal helps prevent emotional overreactions when they occur.
Second, focus on trends rather than individual kilometres. A single slower split rarely determines a race. The overall pattern provides far more useful information.
Third, ask questions before making adjustments. Is the slowdown related to terrain, weather, fueling, hydration, or fatigue? Understanding the cause often reveals the best response.
Finally, protect effort rather than obsessively protecting pace. Effort remains under your control even when conditions become challenging.
This naturally leads into: The Psychological Fatigue of Marathon Training Nobody Talks About
A Coach's Perspective
One of the biggest differences between experienced racers and inexperienced racers is not fitness.
It is interpretation.
Experienced athletes understand that races are dynamic. They expect challenges. They anticipate fluctuations. They recognize that perfect execution rarely exists.
As a result, they tend to remain calmer when adversity appears.
Less experienced runners often expect everything to go according to plan. When the first unexpected challenge appears, confidence begins eroding. A small pace reduction becomes a major emotional event.
The irony is that both athletes may be experiencing exactly the same situation.
The difference lies in the response.
Over the years, I have observed that runners who remain objective generally outperform runners who become emotionally attached to every split. The ability to stay calm often becomes a competitive advantage.
Not because it eliminates fatigue.
Because it improves decision-making.
Final Thoughts
Most runners do not lose races because pace slows.
They lose races because they panic when pace slows.
A small reduction in pace is often a normal part of endurance competition. The body is managing fatigue, environmental conditions, fueling demands, and countless other variables simultaneously. Expecting perfect consistency throughout a marathon or ultramarathon is often unrealistic.
The key is learning how to respond.
Athletes who remain calm, evaluate the situation objectively, and focus on controllable factors tend to make better decisions. Better decisions often preserve performance and confidence when races become difficult.
If there is one lesson to take from this article, it is this:
Treat pace as information rather than judgment.
The watch can tell you what is happening.
Your response determines what happens next.
If you'd like to continue improving your pacing strategy, the next logical step is reading How to Pace Trail Races Without Destroying Your Legs Early, where we explore another environment in which pace alone rarely tells the full story.
