When in April are most Ultra races held?
The busiest weekend in California is April 17 and April 18, with 3 Ultra races on those two days, and the single busiest day is Saturday, April 17 with 3. Every one of them is on a Saturday or a Sunday.
Race calendar · April 2027 · California
April 2027 Ultra Races in California
Every Ultra in California in April 2027, all 5 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
5 Ultra races in April 2027
What the field actually runs
April Ultra Races, By the Numbers
5:55:37Median finish time
4:25:29Median winning time
20Median field size
3April Ultra races with published results
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 Sep 22, 2026.
When in April
The April Race Weekends
Ultra races do not spread evenly across April. The busiest weekend is April 17 and April 18, with 3 of them.
By the numbers
The Biggest and Longest-Running
The April Ultra races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
April Ultra Races by City
Soonest Ultra Races in April
5 total Sat, Apr 3, 2027Release the Kraken 5K. 10K. 18 Miler & 50K Long Beach, CAFrom $40Details Sat, Apr 17, 2027Mountains 2 Beach Marathon and Half Ventura, CAFrom $40Details Sat, Apr 17, 2027Silver Moon Race: Kings River Reedley, CAFrom $90Details Sat, Apr 17, 2027Horseshoe Lake Trail Run Los Gatos, CAFrom $60Details Sat, Apr 24, 2027SPASM Lake Chabot Trail Run Castro Valley, CAFrom $60Details
Common Questions About Running an April Ultra in California
When should I sign up for an April Ultra?
As early as you can. 4 of these April Ultra races already have a price increase on the calendar, and 5 are open for entry right now.
How much does an April Ultra cost to enter?
The typical entry is $60, with paid entries running from $39.99 up to $90. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
What is a good Ultra time?
Across the 3 of these April Ultra races with published results from past editions, the median finisher ran 5:55:37, and the median winning time was 4:25:29. So anything under 5:55:37 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.
How big is a typical April Ultra field?
The median one finished 20 runners, across the 3 of these April Ultra races 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 8:39:48.
Are there trail Ultra races in California in April?
Yes, 2 races around California get you off the pavement: 2 are trail races. Surfaces are not always published, so it is worth checking a specific race before you register.
Ultra Races in Other Months
March and May sit either side of April, which is where most people look next when a date does not fit.