When in January are most 10K races held?
The busiest weekend in Arizona is January 16 and January 17, with 3 10K races on those two days, and the single busiest day is Saturday, January 30 with 3. Every one of them is on a Saturday or a Sunday.
Race calendar · January 2027 · Arizona
January 2027 10K Races in Arizona
Every 10K in Arizona in January 2027, all 9 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
9 10K races in January 2027
What the field actually runs
January 10K Races, By the Numbers
1:08:05Median finish time
44:08Median winning time
211Median field size
4January 10K 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 January
The January Race Weekends
10K races do not spread evenly across January. The busiest weekend is January 16 and January 17, with 3 of them.
By the numbers
The Biggest and Longest-Running
The January 10K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
January 10K Races by City
Soonest 10K Races in January
9 total Sat, Jan 9, 2027Chilly Willy 5K/10K/Half Marathon - Tucson Tucson, AZFrom $30Details Sun, Jan 10, 2027Chilly Willy 5K/10K/Half Marathon - Phoenix Phoenix, AZFrom $30Details Sat, Jan 16, 2027MLK Jr. Freedom Run 5K/10K/13.1 PHOENIX Phoenix, AZFrom $30Register Sat, Jan 16, 2027Sunrise Marathon 5K/10K/13.1 PHOENIX Phoenix, AZFrom $30Register Sun, Jan 17, 2027Sun Run: La Primera 5K/10K Roadrace with FitKidz Mile Tucson, AZFrom $30Details Sat, Jan 23, 2027Empire Ranch Trail Run Sonoita, AZFrom $5Details Sat, Jan 30, 2027Yuma Territorial Marathon, Half Marathon, 10k and Team Relay Somerton, AZFrom $40Details Sat, Jan 30, 2027Coffee Lover Run PHOENIX Phoenix, AZFrom $30Register Sat, Jan 30, 2027Run for Donut PHOENIX Phoenix, AZFrom $30Register
Common Questions About Running a January 10K in Arizona
When should I sign up for a January 10K?
As early as you can. 4 of these January 10K races already have a price increase on the calendar, and 9 are open for entry right now.
How much does a January 10K cost to enter?
The typical entry is $30, with paid entries running from $5 up to $40. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
What is a good 10K time?
Across the 4 of these January 10K races with published results from past editions, the median finisher ran 1:08:05, and the median winning time was 44:08. So anything under 1:08:05 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 10K field?
The median one finished 211 runners, across the 4 of these January 10K 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 1:57:55.
Are there trail 10K races in Arizona in January?
Yes, one race around Arizona gets you off the pavement: 1 is a trail race. Surfaces are not always published, so it is worth checking a specific race before you register.
10K Races in Other Months
December and February sit either side of January, which is where most people look next when a date does not fit.