NOTE: Many races have been cancelled, postponed, or switched to virtual-only due to the ongoing COVID-19 pandemic. We’re doing our best to update information as soon as possible, but check the race’s website for the latest details.
See all December 2020 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.
Saturday, December 5
Sunday, December 6
| Sun Dec 6 | Dirty South Trail Half Marathon & 10K | Knoxville TN |
| Sun Dec 6 | EOD Warrior Dash Marathon Half Marathon & 7K | Washington DC |
| Sun Dec 6 | Florida Holiday Halfathon & 10K | Madeira Beach FL |
| Sun Dec 6 | Fredericksburg Blue and Gray Half Marathon | Fredericksburg VA |
| Sun Dec 6 | Happy Holidays Half MerryThon | Gloucester MA |
| Sun Dec 6 | Islamorada Half Marathon & 10K | Islamorada FL |
| Sun Dec 6 | Naples Distance Classic Half Marathon 10K & 5K | Naples FL |
| Sun Dec 6 | NYC Holiday Half Marathon 10K & 5K | Brooklyn NY |
| Sun Dec 6 | Phoenix Run Run Rudolph Half Marathon Quarter Marathon & 5K | Peoria AZ |
| Sun Dec 6 | Rock 'n' Roll San Antonio Marathon & Half Marathon | San Antonio TX |
| Sun Dec 6 | Rock Canyon Half Marathon | Pueblo CO |
| Sun Dec 6 | RunnersWorld Tulsa Half and Half Marathon | Tulsa OK |
| Sun Dec 6 | Sandy Clause Marathon & Half Marathon | Ponte Vedra FL |
| Sun Dec 6 | Topo Trail Marathon Half Marathon & Quarter Marathon | Bethel OH |
| Sun Dec 6 | Trail Hog Half Marathon 10K & 5K | Venice FL |
Saturday, December 12
| Sat Dec 12 | Bulow Woods Trail Race Half Marathon 50K & 4-Mile | Ormond Beach FL |
| Sat Dec 12 | Cajun Country Half Marathon 10K & 5K | Lafayette LA |
| Sat Dec 12 | Christmas in Kentucky Half Marathon & 4-Miler | Harrodsburg KY |
| Sat Dec 12 | down2earth Half Marathon Cross Country Run | Hialeah FL |
| Sat Dec 12 | Hark the Herald Angels Half Marathon & 10K | Tiburon CA |
| Sat Dec 12 | Helen Holiday Trail Half Marathon | Helen GA |
| Sat Dec 12 | Huntersville Half Marathon 10K & 5K | Huntersville NC |
| Sat Dec 12 | Joplin Memorial Run Half Marathon 10K & 5K | Joplin MO |
| Sat Dec 12 | Mosaic Trail Run Marathon Half Marathon 50K 15K 10K & 5K | Liberty Hill TX |
| Sat Dec 12 | North Lake Half Marathon | Greenville SC |
| Sat Dec 12 | Pigeon Forge Half Marathon 5K & Relay | Pigeon Forge TN |
| Sat Dec 12 | Spicewood Vineyards Half Marathon & 10K | Spicewood TX |
| Sat Dec 12 | Still Hollow Half Marathon & 10K | Chattanooga TN |
| Sat Dec 12 | Winter Lake Anna Half Marathon 10K & 5K | Spotsylvania VA |
Sunday, December 13
| Sun Dec 13 | First Watch Locomotive Half Marathon & 5K | Kennesaw GA |
| Sun Dec 13 | Key Biscayne Half Marathon & 10K | Biscayne FL |
| Sun Dec 13 | Mississippi Gulf Coast Marathon & Half Marathon | Gulfport MS |
| Sun Dec 13 | Tucson Run Run Rudolph Half Marathon Quarter Marathon & 5K | Tucson AZ |
Saturday, December 19
| Sat Dec 19 | Christmas Corral Half Marathon & 4-Mile | Pretty Prairie KS |
| Sat Dec 19 | Estrella Mountain Trail Fest Half Marathon 10K & 5K | Goodyear AZ |
| Sat Dec 19 | Run for the Ranch Marathon Half Marathon & Relay | Springfield MO |
| Sat Dec 19 | San Diego Holiday Half Marathon | La Jolla CA |
| Sat Dec 19 | The Stars at Night Half Marathon 10K & 5K | San Antonio TX |
| Sat Dec 19 | Whine Not a Marathon & Half | Dallas TX |
Sunday, December 20
| Sun Dec 20 | Florida West Coast Half Marathon & 5K | Sarasota FL |
| Sun Dec 20 | Mount Dora Half Marathon & 5K | Mount Dora FL |
| Sun Dec 20 | Whine Not Another Marathon & Half | Dallas TX |
Monday, December 28 – Thursday, December 31
| Thu Dec 31 | New Years Double Marathon Half Marathon & 5K | Allen TX |
