The 45-Second Run Test records the distance an athlete covers in 45 seconds at maximal effort. MAT describes it as an anaerobic capacity test scored by distance covered, while Topend Sports describes it as a speed endurance test commonly used by track coaches for 400 m and 800 m runners.
Direct peer-reviewed validation evidence for the exact 45-second field test is limited. The best supporting evidence comes from related research on sprint running, anaerobic speed reserve, maximal sprint speed and 400 m performance modelling.
The 45-Second Run Test is a simple field assessment for high-intensity running endurance. Because the athlete runs maximally for a fixed duration, the score is distance covered rather than time.
It is most relevant for sports where athletes must sustain high-speed running beyond a short acceleration phase, including 400 m running, 800 m running and field sports requiring repeated high-intensity efforts.
Test name: 45-Second Run Test
Category: Speed endurance / anaerobic running capacity
Primary score: Distance covered in 45 seconds
Best suited to: 400 m runners, 800 m runners, field sport athletes and speed-endurance monitoring
Key limitation: Exact distance measurement can be difficult without clear track marking, GPS or video review.
The athlete runs as far as possible in 45 seconds. The total distance covered is recorded. MAT’s support content describes the 45-second run as a fixed-time anaerobic capacity test where greater distance indicates better performance.
The test is often used as a practical speed-endurance measure rather than a laboratory anaerobic capacity test.
The 45-Second Run Test may be used to assess:
Speed endurance
Anaerobic running capacity
Ability to maintain high-speed running
400 m and 800 m performance context
Baseline and retest change
Conditioning progress
Field-based high-intensity running tolerance
The test may reflect:
Distance covered under maximal 45-second effort
Speed endurance
Anaerobic glycolytic contribution
Pacing and effort distribution
Running economy at high speed
Fatigue tolerance
400 m performance context
It does not directly measure VO₂max, lactate threshold, maximal sprint speed or laboratory anaerobic capacity.
The test may be useful for:
400 m runners
800 m runners
Field sport athletes
Court sport athletes
Runners completing speed-endurance monitoring
Coaches tracking high-intensity running performance
It may not be appropriate for inexperienced runners or clients who cannot safely perform maximal running for 45 seconds.
400 m track or flat measured running area
Cones or distance markers
Stopwatch or Measurz stopwatch
Optional timing gates or video timing
Optional Measurz AR measurement to confirm start/finish markers or distance intervals
Optional GPS or distance-measurement system
Optional Measurz metronome for warm-up drills or related pacing work
MAT tools such as Anker, Gripper and Muscle Meter for related strength profiling
Measurz/MAT platform for distance, conditions, symptoms, notes and retest comparison
For best repeatability, use a marked track and the same start position each time.
Mark a measured track or running area.
Complete a progressive warm-up.
Athlete starts from a standardised position.
On “go”, athlete runs as far as possible in 45 seconds.
Stop timing at exactly 45 seconds.
Mark the athlete’s position at the 45-second point.
Record distance covered to the nearest practical measurement.
Record wind, surface, footwear, warm-up and symptoms.
Primary score:
Distance covered in metres in 45 seconds
Optional outputs:
Average speed
Estimated 400 m performance context
Distance change from baseline
Pace notes
Fatigue or pacing notes
Greater distance generally indicates better speed endurance under the test conditions. Interpretation should account for measurement accuracy, wind, surface and pacing.
Formal peer-reviewed normative values for the exact 45-Second Run Test are limited.
Topend Sports provides practical coaching guidance suggesting many athletes cover roughly 310–390 m, with higher values more relevant to advanced track athletes. This should be treated as practical field guidance, not formal normative data.
Elite/very high speed endurance: 390 m or more
Advanced: 370–389 m
Intermediate: 340–369 m
Developing: 310–339 m
Low current speed-endurance profile: under 310 m
Use baseline comparison and same-condition retesting as the main interpretation method.
Direct peer-reviewed evidence for the exact 45-second run is limited. Related evidence from anaerobic speed reserve research supports the importance of accurately assessing maximal sprint speed and running-based high-intensity performance characteristics in running-based sports.
Recent sprint bioenergetics modelling research has examined energy contribution across 100–400 m sprint distances, supporting the concept that longer sprint performances involve both anaerobic and aerobic contributions.
Common errors include:
Inaccurate distance marking
Delayed stop signal
Poorly marked final position
Comparing windy and calm conditions
Using different tracks or surfaces
Poor pacing
Not standardising warm-up
Treating field estimates as laboratory anaerobic capacity
The 45-Second Run Test can help professionals:
Monitor speed endurance
Track 400 m and 800 m preparation
Compare baseline and retest distance
Assess high-intensity running tolerance
Support conditioning prescription
Combine running data with sprint, strength, jump and recovery measures
Record:
Test name: 45-Second Run
Distance covered
Units: metres
Average speed if calculated
Track or surface
Timing method
Wind and conditions
Footwear
Warm-up
Symptoms
Pacing notes
Retest date
Measurz can store distance, conditions and notes. The Measurz stopwatch supports timing, while AR measurement can help standardise setup markers where appropriate.
It measures how far an athlete can run in 45 seconds and provides practical information about speed endurance.
It is a field-based speed-endurance test with substantial anaerobic contribution, but it is not a direct laboratory measurement of anaerobic capacity.
It is commonly used in 400 m and 800 m contexts, but it can also be useful for field sport athletes.
Formal exact-test norms are limited. Use practical benchmarks and baseline comparison.
Distance covered in metres.
The 45-Second Run Test measures distance covered in a fixed time.
It is best interpreted as a speed-endurance field test.
Exact formal norms are limited.
Measurement accuracy is important.
Measurz can track distance, conditions and progress.
Movement Assessment Technologies. (2023). 45-second run test: Anaerobic capacity guide. https://help.matassessment.com/en/articles/75-45-second-run-test-anaerobic-capacity-guide
Thron, M., Düking, P., Ruf, L., Härtel, S., Woll, A., & Altmann, S. (2024). Assessing anaerobic speed reserve: A systematic review on the validity and reliability of methods to determine maximal aerobic speed and maximal sprinting speed in running-based sports. PLOS ONE. https://doi.org/10.1371/journal.pone.0296866
Topend Sports. (n.d.). 45-second run test calculator: Predict 400 m time and pace. https://www.topendsports.com/testing/tests/45-seconds-run.htm
Tremblay, J., et al. (2025). Quantifying metabolic energy contributions in sprint running: A novel bioenergetic model for 100–400 m sprint events. European Journal of Applied Physiology. https://doi.org/10.1007/s00421-025-05831-0
