Pacing at Aid Stations During a Race: Should You Slow Down at Water Stops?

The Hidden Cost of Aid Stations

Typical marathon aid station operations:

1. Slow down before entering: 1-2 seconds
2. Grab a cup: 1-2 seconds
3. Drink: 3-5 seconds
4. Accelerate back to pace: 2-3 seconds

Total loss per station: 7-12 seconds

With roughly 8-10 aid stations in a full marathon, cumulative loss: 56-120 seconds.

This number determines whether you finish in 3:29 or 3:31.

Quantitative Comparison of Different Strategies

Using a full marathon 3:30 goal (5:00/km) as an example:

Strategy A: Come to a Full Stop and Walk 10 Steps

• Loss per station: 12-15 seconds
• Cumulative over 10 stations: 120-150 seconds
• Total finish time: 3:32:00-3:32:30

Strategy B: Slow to 6:30/km and Drink While Running

• Loss per station: 5-7 seconds
• Cumulative over 10 stations: 50-70 seconds
• Total finish time: 3:30:50-3:31:10

Strategy C: No Slowdown at All, Force the Drink

• Loss per station: 1-2 seconds
• Cumulative over 10 stations: 10-20 seconds
• Total finish time: 3:30:10-3:30:20
• Risks: Choking, spilling half, insufficient hydration/nutrition

Strategy D: Fully Stop at 5 Selected Stations, Skip 5

• Loss at 5 stations: 60 seconds
• No fueling at 5 stations: possible glycogen depletion late in the race
• Total finish time: 3:31:00 (but with risk of hitting the wall)

Best Strategy: Phased Differential Fueling

Recommended hybrid strategy:

0-15K: Strategy C (No Slowdown)

• Water needs are low at this point, energy stores are sufficient
• Grab a cup and take a quick sip (may spill 50%)
• Minimize speed loss

15-30K: Strategy B (Slow Down 5 Seconds)

• Main fueling period
• Ensure you get 100-150 ml plus one energy gel
• Trade a slight slowdown for guaranteed fueling

30-42K: Strategy A or B (Depending on Conditions)

• If heart rate has drifted to 90% of max, a “strategic 20-second walk” may actually aid recovery
• If you’re still feeling okay, continue with Strategy B

Aid Station Technique Training

Drinking while running is a skill that requires practice:

Drill 1: Cup Pinching

Pinch the paper cup into a V shape with your thumb and index finger to narrow the flow and reduce spills.

Drill 2: Breathing Coordination

Pause your exhale while drinking, close your mouth to swallow, and avoid choking.

Drill 3: Stable Running Form

While drinking, lean your upper body slightly forward and lift your chin to prevent water from running down your chin.

Drill 4: Opening Energy Gels

Tear open the corner of the gel before the race starts; during the race you only need to pull it open, no biting required.

Choosing Your Position at the Station

Aid stations at major races can stretch 100-200m with multiple volunteers handing out cups. Position selection:

• First table: Most crowded and congested, high risk of runner collisions
• Middle tables: Good choice, volunteers are focused
• Last table: Fewest people, but volunteers may run out of cups
• Recommendation: Choose from the middle to the back end for smoother flow

Fueling Preferences

How to handle various fueling options:

Solid food should only be considered after 30K; otherwise, stuffing it into your stomach at an aid station will be hard to digest with the bouncing of running.

Conclusion

Aid stations are not rest stops—they are “trade-off points between pacing and nutrition.” Master the skill of drinking while running, and you can save 60-90 seconds in a full marathon. But never skip fueling just to save time—glycogen depletion costs far more.

Related Reading

• Marathon Aid Station SOP: 4-Phase Intake Rhythm at 5K, 15K, 25K, 35K
• Half Marathon Fueling: Energy and Hydration Plan for Two Aid Stations
• Marathon Fueling Strategy: Water and Energy Intake During the Race
• Ultramarathon Aid Station Strategy: Comparing Efficiency of Mobile vs. Fixed Fueling