Average Half Marathon Time By Age: Chart And What'S Good

TL;DR: Across roughly one million US race results from 2024, the median half marathon time sits around 2:00-2:04 for men and 2:16-2:24 for women, depending on age. RunRepeat's larger global dataset puts the overall median at 2:14:59. A sub-2:00 half already beats about half of male finishers and roughly three quarters of female finishers - it's a much bigger deal than race-day chatter admits.

The half marathon is the most honest distance in road racing. It's long enough that you can't fake fitness, short enough that almost anyone with six months of consistency can finish one upright. Which is exactly why "is my time any good?" comes up so often - the field is huge and wildly mixed, from club racers to people walking every aid station.

Average half marathon time by age and sex

These medians come from an Outside Run analysis of about one million half marathon results from US races in 2024. Median means half the field finished faster and half slower - a more useful anchor than the mean, which gets dragged around by walkers:

For a global reference point: RunRepeat's dataset of 35 million race results puts the all-ages median at 1:59:48 for men and 2:24:03 for women.

Look at how flat the top of that curve is. A man's median moves less than five minutes from his 20s to his 40s. This matches what large-scale research keeps finding - a German analysis of more than 900,000 marathon and half marathon results (Leyk et al., 2010, published in Deutsches Ärzteblatt International) found no significant performance decline before age 55. Most of what people call "aging" in their 30s and 40s is actually training history.

What's a good half marathon time?

Here's the tier breakdown I use with athletes, anchored to the quartile data from that same million-result set (top 25% of men in their 20s-40s ran roughly 1:46-1:49; top 25% of women, about 2:01-2:06):

Standard caveat: these assume a flattish course in reasonable weather. A humid July half with 800 feet of climbing can cost anyone 8-12 minutes, and comparing that result to this table is a fast route to unearned self-criticism.

The pace math, so you don't have to do it

Doing long runs indoors? Our treadmill speed to cadence chart converts every speed setting into a step rate you can match music to.

Where half marathons actually go wrong: miles 9-11

Ask anyone who missed their goal by six minutes and the story is always the same. Felt amazing through 10K, banked some time, then the wheels came off around mile nine. The half is long enough that a pace 15 seconds too hot in the first hour becomes a death march in the second.

The physiological tell shows up in your legs before your lungs: cadence sags. Most recreational runners naturally turn over somewhere between 150 and 170 steps per minute - not the mythical 180, which is an elite average, not a prescription. Under fatigue, your step rate drops first, your stride gets longer and heavier, and pace bleeds away so gradually you don't notice until the damage is done.

This is where an external rhythm earns its keep over a watch alert you'll ignore at mile ten. Music locked to your goal step rate works like a metronome your feet follow without thinking - but a regular playlist drifts anywhere from 95 to 130 BPM, which actively fights you. GagaRun reads your live cadence and plays only the songs from your own library that match your target, so if your race rhythm is 164 steps per minute, every song holds you at 164 through exactly the miles where your brain wants to negotiate.

For the full race-day plan - splits, fueling windows, and what BPM to load for each stage - see our half marathon negative-split pacing strategy.

Moving up a tier

Getting from 2:25 to 2:05 is rarely about speed work. In order of what actually moves the needle:

1. Raise weekly mileage gently. The half rewards aerobic volume above all. Four to five runs a week, most of them genuinely easy.
2. Make the long run non-negotiable. Build to 10-12 miles before race day. The final 5K stops being scary when your legs have been there.
3. Add one tempo run weekly. Twenty to thirty minutes at "comfortably hard" teaches the exact effort a half demands.
4. Rehearse race pace late in long runs. The last 3 miles at goal pace, on tired legs, is the single most race-specific workout there is.

Chasing the two-hour barrier specifically? We've got a dedicated sub-2:00 half marathon plan with the week-by-week build.

Frequently asked questions

Is a 2:30 half marathon good for a beginner?

Yes. A 2:30 means holding 11:27 miles for over 13 miles, which takes real endurance. Most first-timers land between 2:20 and 3:00, often with walk breaks. Finishing your first half at any pace puts you in a small minority of the population.

How much slower should my half marathon pace be than my 10K pace?

For most runners, 20 to 35 seconds per mile slower. If you race a 10K at 9:20 pace, a realistic half marathon target is around 9:45-9:55 per mile, or roughly a 2:08-2:10 finish. A much bigger gap usually means your long-run volume is the limiter.

Why are women's average times about 20 minutes slower than men's?

Physiology accounts for a 10-12% performance gap (VO2 max, hemoglobin, muscle mass), which maps to roughly 12-15 minutes over 13.1 miles. The rest is field composition - women's fields at big halves include a higher share of first-timers, which stretches the median further.

Do half marathon times really not decline until 55?

In large datasets, the median barely moves from the 20s through the 40s - under five minutes for men. The Leyk study of 900,000+ results found no significant decline before 55, and even after that it's a slope of a few percent per decade, not a cliff. A consistent 60-year-old routinely out-runs a sedentary 30-year-old.