Is January a good month for a Half Marathon?
January sits in the middle of the year for the Half Marathon, carrying 283 against 439 in November and 93 in August. Enough to choose from, and easier to get into than the races at the peak of the season.
Race calendar · January 2027
Half Marathons in January 2027
283 half marathons across the US in January 2027, sorted by date. Which weekends are busiest, what the fields actually run, entry fees, and where each one starts.
January half marathons are a study in contrast. Freeze-your-fingers cold greets runners in the Midwest, the Northeast, and the mountain states, while the South, the desert Southwest, and the coasts offer genuine racing weather. Knowing where you land on that spectrum shapes everything from your gear to your goal time.
The month opens the training year, which means most people toeing a January start line are either chasing a post-holiday fitness reset or locking in an early benchmark before a spring build. Neither goal asks for a personal best, so the field tends to be relaxed and the atmosphere forgiving for newer runners.
Daylight is short and mornings are dark, so many events start late enough to catch the sun but early enough to finish before temperatures swing. If you are traveling for a race, the Southern and coastal options give you the most weather insurance, though even those can surprise you with a cold front or unexpected humidity.
What the field actually runs
January Half Marathons, By the Numbers
2:11:07Median finish time
1:30:58Median winning time
32Median field size
114January half marathons 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 Oct 16, 2026.
When in January
The January Race Weekends
Half marathons are not spread evenly across January. 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 Biggest and Longest-Running
The January half marathons that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
January Half Marathons by State
Florida 43Texas 37California 35North Carolina 17Georgia 14Oklahoma 10Missouri 9Arizona 8Colorado 8New Jersey 8Kentucky 7New York 7Arkansas 6Illinois 6Louisiana 6Nevada 6Tennessee 6Washington 6Alabama 5Iowa 4Michigan 4Pennsylvania 4Minnesota 3Ohio 3Oregon 3Utah 3Indiana 2Kansas 2Maryland 2New Mexico 2Hawaii 1Montana 1Nebraska 1South Carolina 1Virginia 1West Virginia 1Wisconsin 1
Half Marathons by City in January
The Next Half Marathons in January
283 total Fri, Jan 1, 2027Run In The New Year 5k/10K/Half Marathon Huntington Beach, CAFrom $75Details Fri, Jan 1, 2027New Years Day 5K & Half Marathon Cumming, GAFrom $27Details Fri, Jan 1, 2027Brazen New Year's Day Castro Valley, CAFrom $100Details Fri, Jan 1, 2027Revolution Run - New Years Day Morning Kearns, UTFrom $53Details Fri, Jan 1, 2027Lehigh Valley New Year's Chaser: Half Marathon, 10K and 5K Bethlehem, PARegistration closedFrom $80Details Fri, Jan 1, 2027New Year's Day Dash - 5K, 10K, 10-Miler, Half Marathon Long Beach, CAFrom $39Details Fri, Jan 1, 2027New Years Day 5K & Half Marathon-Shreveport Bossier City, LAFrom $27Details Fri, Jan 1, 2027New Years Day 5K & Half Marathon Elizabethtown, NCFrom $27Details Fri, Jan 1, 2027Brazen New Year's Eve Castro Valley, CAFrom $100Details Sat, Jan 2, 2027Newport Resolution Run Newport, ORFrom $85Details Sat, Jan 2, 2027Carolina Beach State Park Trail Half Marathon & 5K Carolina Beach, NCFrom $65Details Sat, Jan 2, 2027Time Travel Half-Marathon/5K/10K - Kansas City Olathe, KSFrom $60Details
Common Questions About Running a January Half Marathon
What should I wear for a January half marathon?
Dress for the first mile, not the finish. In the North and mountains, that means a wind-resistant outer layer, gloves, and a hat you can shed mid-race. In the South or desert, a light long sleeve is usually enough at the gun. Moisture-wicking fabric matters everywhere because January air, even mild January air, turns cold when you are wet.
Is a January half marathon a good choice for a beginner?
It can be an excellent choice. The forgiving atmosphere and modest field sizes at many January events take pressure off first-timers. The main risk is winter training: building thirteen-point-one miles of fitness through November and December requires discipline when days are short and roads can be icy. A solid plan started in October makes January realistic.
How far ahead should I start training for a January half marathon?
Count back a full summer and fall. A runner starting from a comfortable base needs roughly three to four months of structured work, which puts the start of a January race plan in September or early October. Starting then means your longest training runs land in November, before holiday schedules and winter weather complicate long-run logistics.
Is it worth traveling to a warmer state for a January half marathon?
For runners based in the North or interior, yes, with one caveat. Texas, California, and Florida carry the largest concentrations of January races and generally offer mild racing conditions, but weather in January is never guaranteed anywhere. Book a race with a flexible entry policy, and arrive a day early so travel delays do not become your warm-up.
When in January are most half marathons held?
The busiest weekend is January 16 and January 17, with 80 of them, 69 of those on Saturday, January 16. Another 12 fall on a weekday, which is worth knowing if you are traveling for one.
What is a good Half Marathon time?
Across the 114 of these January half marathons with published results from past editions, the median finisher ran 2:11:07, and the median winning time was 1:30:58. So anything under 2:11:07 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 January Half Marathon field?
The median one finished 32 runners, across the 114 of these January 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 3:17:21.
Which states have the most January half marathons?
Florida has 43, Texas has 37, California has 35, North Carolina has 17, Georgia has 14. If you are willing to travel, those are the states where a January weekend gives you the most to choose from.
Are there trail half marathons in January?
Yes, 5 races around the United States get you off the pavement: 5 are trail races.