See all January 2019 half marathons across the USA below, or click Race Calendars above to see each state’s calendar. For each race, you’ll find course maps, elevation profiles, reviews and info on how to register.
Tuesday, January 1 – Friday, January 4
| Tue Jan 1 | Brazen New Year's Day Half Marathon 10K & 5K | Castro Valley CA |
| Tue Jan 1 | Chilly Willy Half Marathon 10K & 5K | Seekonk MA |
| Tue Jan 1 | Hangover Half Marathon | Wichita KS |
| Tue Jan 1 | Happy New Year Marathon 2/3 Marathon Half Marathon 15K 10K & 5K | Long Beach CA |
| Tue Jan 1 | Holiday Series Marathon Half Marathon 50K 10K & 5K – Day 7 | Las Cruces NM |
| Tue Jan 1 | I Ran Marathons Winter Festival Series – New Year's Day | San Antonio TX |
| Tue Jan 1 | Metal Saw Texas Marathon & Half Marathon | Kingwood TX |
| Tue Jan 1 | New Year's Double Marathon Half Marathon & 5K | Allen TX |
| Tue Jan 1 | Racing Cane Half Marathon | Orem UT |
| Wed Jan 2 | Holiday Series Marathon Half Marathon 50K 10K & 5K – Day 8 | Las Cruces NM |
| Wed Jan 2 | I Ran Marathons Winter Festival Series – Aphrodite | San Antonio TX |
| Thu Jan 3 | Holiday Series Marathon Half Marathon 50K 10K & 5K – Day 9 | Las Cruces NM |
| Fri Jan 4 | Holiday Series Marathon Half Marathon 50K 10K & 5K – Day 10 | Las Cruces NM |
Saturday, January 5
| Sat Jan 5 | Citrus Heritage Run Half Marathon & 5K | Riverside CA |
| Sat Jan 5 | Freeze Your Half Off – Saturday | Chattanooga TN |
| Sat Jan 5 | Holiday Series Marathon Half Marathon 50K 10K & 5K – Day 11 | Las Cruces NM |
| Sat Jan 5 | Oregon Road Runners Club Y2K Half Marathon & 10K | Forest Grove OR |
| Sat Jan 5 | Resolution Run & Polar Bear Plunge Half Marathon 10K & 5K | Newport OR |
| Sat Jan 5 | River Road Run Half Marathon 10K & 5K | New Braunfels TX |
| Sat Jan 5 | Twin Cities Polar Dash Half Marathon | St. Paul MN |
| Sat Jan 5 | Watchung Run 50K Marathon Half Marathon & 10K | Mountainside NJ |
Sunday, January 6
| Sun Jan 6 | Beachside Half Marathon & 5K | Vero Beach FL |
| Sun Jan 6 | Freeze Your Half Off – Saturday | Chattanooga TN |
| Sun Jan 6 | Herb Parsons Trail Marathon & Half Marathon | Collierville TN |
| Sun Jan 6 | Holiday Series Marathon Half Marathon 50K 10K & 5K – Day 12 | Las Cruces NM |
| Sun Jan 6 | I Ran Flagship Marathons Series – Greece | San Antonio TX |
| Sun Jan 6 | Spring Hill Marathon Mania | Spring Hill FL |
Saturday, January 12
| Sat Jan 12 | All-Out Polar Prowl Half Marathon 10K & 5K | Arvada CO |
| Sat Jan 12 | Best Damn Race Jacksonville Half Marathon 10K & 5K | Jacksonville FL |
| Sat Jan 12 | Charleston Marathon Half Marathon & 5K | Charleston SC |
| Sat Jan 12 | I Ran Flagship Marathons Series – Grenada | San Antonio TX |
| Sat Jan 12 | Sorry Bout That Half Marathon | Polson MT |
| Sat Jan 12 | Southern California Half Marathon & 5K | Irvine CA |
| Sat Jan 12 | Walt Disney World Half Marathon | Lake Buena Vista FL |
Sunday, January 13
| Sun Jan 13 | First Light Marathon Half Marathon & Fun Run | Mobile AL |
| Sun Jan 13 | Lake Mead Marathon Half Marathon 10K 5K & Relay | Boulder City NV |
Monday, January 14 – Friday, January 18
| Fri Jan 18 | Rally in the Valley of Fire Half Marathon | Overton NV |
Saturday, January 19
| Sat Jan 19 | Arena Attack Indoor Race Series – Hartford | Hartford CT |
| Sat Jan 19 | Dunedin Half Marathon | Dunedin FL |
| Sat Jan 19 | I Ran Flagship Marathons Series – Guatemala | San Antonio TX |
| Sat Jan 19 | Ocean Isle Bridge Run for Food Half Marathon 10K & 5K | Ocean Isle Beach NC |
| Sat Jan 19 | Oregon Winter Half & Quarter Marathon | Aloha OR |
| Sat Jan 19 | The Rain Run Half Marathon | Redmond WA |
| Sat Jan 19 | Rally in the Valley of Fire Half Marathon | Overton NV |
| Sat Jan 19 | St. George Half Marathon & 5K | St. George UT |
Sunday, January 20
Monday, January 21 – Friday, January 25
| Thu Jan 24 | Aloha Series Marathon Half Marathon 50K 10K & 5K – Day 1 | Kapa'a HI |
| Fri Jan 25 | Aloha Series Marathon Half Marathon 50K 10K & 5K – Day 2 | Kapa'a HI |
Saturday, January 26
Sunday, January 27
| Sun Jan 27 | Aloha Series Marathon Half Marathon 50K 10K & 5K – Day 4 | Kapa'a HI |
| Sun Jan 27 | Big Beach Marathon & Half Marathon | Gulf Shores AL |
| Sun Jan 27 | Clearwater Running Festival | Clearwater FL |
| Sun Jan 27 | Highland Y Run Half Marathon 10K & 5K | Highland CA |
| Sun Jan 27 | Miami Marathon & Half Marathon | Miami FL |
| Sun Jan 27 | Miracle Match Marathon Half Marathon 10K & 5K | Waco TX |
| Sun Jan 27 | SHE Power Half Marathon & 5K | Chandler AZ |
| Sun Jan 27 | Sombrero Half Marathon 10K & 5K | Simi Valley CA |
| Sun Jan 27 | Too Cold to Hold Half Marathon 10K & 5K | Dallas TX |
| Sun Jan 27 | Town of Celebration Marathon & Half Marathon | Celebration FL |
| Sun Jan 27 | Women's Run Series Half Marathon 10K & 5K – Phoenix | Peoria AZ |
