How to compare sprint times fairly

Why sprint times are easy to misread

Parents and athletes see times quoted everywhere: camp results, social posts, recruiting profiles. Many of these numbers can't be compared with each other because they were collected in different ways. A time that looks faster may simply have used a different start, a different surface, or a different stopwatch.

What changes the number

• Distance. A 10-yard, 20-yard, and 40-yard time measure different things. Short distances mostly show acceleration, while longer ones include more top-speed running.
• Start. A standing start, a three-point stance, and a "flying" start with a running approach all produce different times over the same distance. A flying start generally produces a quicker time over the same distance because the athlete enters the timing zone already moving.
• Timing method. Hand timing depends on the timer's reaction and judgment. Electronic timing gates remove much of that, but different systems start the clock differently, for example on first movement or when a beam is broken. Hand times and electronic times should not be mixed.
• Surface and footwear. Track, turf, grass, and gym floor all feel different underfoot, as do spikes, cleats, and trainers.
• Weather and wind. Wind, heat, cold, and wet ground all affect outdoor times.
• Rest and timing in the week. An athlete sprinting the day after a hard practice, or after a tiring warm-up, is not showing their best. The NSCA Developing Speed excerpt notes that inadequate rest lowers sprint quality even when total volume is small.

Example testing checklist

An example checklist you can adapt. It is a record-keeping tool, not a standard.

• Date, time of day, and location
• Distance and exactly where the start and finish lines were
• Start position (standing, three-point, flying, with approach length)
• Timing method and device
• Surface and footwear
• Weather and wind
• Training load in the 48 hours before
• Warm-up used
• Number of attempts and rest between them
• Which result counted (best or average)

Making a fair comparison

Compare an athlete with themselves under matching conditions rather than with someone else's number from somewhere else. Keep the protocol identical between tests, record everything on the checklist, and treat small changes cautiously because ordinary day-to-day variation can be larger than you expect. A consistent trend over several tests says more than any single "PR."

Related reading

For what the different distances actually measure, see Acceleration vs. top speed. For when to test during a season, see Planning speed work around a high-school season. Back to the main speed guide.