Race calendar · April 2027
376 half marathons across the US in April 2027, sorted by date. Which weekends are busiest, what the fields actually run, entry fees, and where each one starts.
April is the window most road half marathon runners are aiming at when they start a winter training block. The weather is genuinely mixed across the country: the Northeast and Mountain West can still deliver cold mornings and wind, while the Southeast and Southwest are already warm enough to slow you down if you go out too fast.
The variable that most runners underestimate is the gap between regions. A race in coastal California and a race in upstate New York on the same weekend can feel like different seasons entirely. Check the forecast for your specific city, not just the month, and have a warm-up and gear plan that can flex with what you find on race morning.
What the field actually runs
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Nov 12, 2026.
When in April
Half marathons are not spread evenly across April. Here is how the calendar actually falls, weekend by weekend, which is the part worth knowing before you book a trip or plan a taper around one.
By the numbers
The April half marathons that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
It is the fullest month of the year for the Half Marathon. April carries 376 of them, more than any other month, so you get the widest choice of dates, locations and course types without having to travel far for one.
It depends almost entirely on where you race. The South and Southwest can already be warm and humid, making hydration and pacing early in the race more important than the finish-line push. The Northeast, Midwest, and Mountain West can still be cold, windy, or wet, so layers you can shed are worth the extra bag-check stop.
In the South, a singlet and shorts with a light hat for sun protection is likely enough. In the Northeast or at elevation, start with a throwaway layer over a long-sleeve technical shirt and be ready for wind. Gloves and an ear covering cost almost nothing to carry, and you will be glad you have them if the forecast shifts overnight.
Yes, if you choose the region deliberately. The West Coast and Southeast offer the most predictable conditions for traveling runners. The Mountain West adds scenery but also elevation and afternoon temperature swings. The Northeast in April rewards flexibility: you may get a perfect cool morning, or you may race in a raw wind. Build buffer into your travel days.
A full winter training block lines up naturally with an April goal race. If you start structured half marathon preparation in January, you arrive at April with enough mileage to race confidently rather than just finish. Runners who start in late February often get to the start line undertrained and end up pacing by feel rather than fitness.
The busiest weekend is April 24 and April 25, with 116 of them, 94 of those on Saturday, April 24. Another 4 fall on a weekday, which is worth knowing if you are traveling for one.
Across the 181 of these April half marathons with published results from past editions, the median finisher ran 2:13:17, and the median winning time was 1:27:09. So anything under 2:13:17 puts you in the faster half of a typical field. That is the middle of these RunSignup fields, walkers and charity entrants included, not a national average.
The median one finished 59 runners, across the 181 of these April half marathons with published results from past editions. Most are far smaller than the big-city events people picture, which means less crowding at the start and a friendlier field, with a last recorded finisher at 3:25:20.
Texas has 45, California has 36, Florida has 35, North Carolina has 19, Missouri has 14. If you are willing to travel, those are the states where an April weekend gives you the most to choose from.
Yes, 12 races around the United States get you off the pavement: 11 are trail races, and 1 mixes road and trail.
