The Improve Every Day Half Marathon
The Improve Every Day Half Marathon is a running race on December 12, 2026 in San Diego, CA, with an entry fee of $45.
- Date
- December 12, 2026 (34 days to go)
- Price
- $45
- Sport
- Running
From the Organizer
The Improve Every Day Half Marathon is built around one idea: every mile out there is proof of what you’re capable of. This December 12th in San Diego, we’re bringing that to life on a looped course where every lap shows you how far you’ve come.
Half marathon runners will complete just over 3 laps. Each time you come back around you’ll feel the crowd, feed off the energy, and find out what you’re truly capable of. The loop format means you’re never alone out there and the support never stops.
Not ready for 13.1? Run the 4 miler instead. It’s one full lap of the same course, a shorter way to be part of the day and see what you can do.
Whether you’re running your first half, lining up for your first race, or chasing a new PR, you’re out there with people who get it. People who showed up for themselves the same way you did.
Prices go up as we approach race day:
October 1-31: $45
November 1-14: $55
November 15-21: $65
November 22-29: $75
What's included:
- lùth finisher shirt
- Hydrations Stations on course
- Loop-style race
- Post-race hang out
Register now and see how much you are capable of improving!
Events
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
66°
Typical Low
50°
Chance of Rain
18%
Based on US Climate Normals data from San Diego Lindbergh Fld, 2 mi from the venue.
About San Diego, CA
Population
1,385,061
as of 2023
City Elevation
352 ft
Nearest Airport
SAN
San Diego International Airport · 3 mi
Time Zone
Pacific Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at The Improve Every Day Half Marathon, put it on the calendar, and turn “someday” into a start date.
34
Days to train
- Race
- The Improve Every Day Half Marathon
- Date
- December 12, 2026
Get Ready for Race Day
Plan your training, log every workout, and track your progress all the way to race day in the Endurance Grid app.
More Running races near San Diego, CA
Frequently Asked Questions
What is The Improve Every Day Half Marathon?
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The Improve Every Day Half Marathon
Dec 12, 2026