See all August 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.
Thursday, August 1 – Friday, August 2
| Fri Aug 2 | I Ran Marathons Majestic August Series – Moon | San Antonio TX |
Saturday, August 3
| Sat Aug 3 | High Mountain Half Marathon 10K & 5K | Lakeside AZ |
| Sat Aug 3 | I Ran Marathons Majestic August Series – Galaxy | San Antonio TX |
| Sat Aug 3 | John and Jessie Kelley Half Marathon | New London CT |
| Sat Aug 3 | MAYC Mahomet Half Marathon 10K & 5K | Mahomet IL |
| Sat Aug 3 | Minnesota Half Marathon 10-Mile 10K 5-Mile & 5K | St. Paul MN |
| Sat Aug 3 | Mo' Bell Trail Races | Burns TN |
| Sat Aug 3 | Summer Breeze Half Marathon 10K & 5K | San Leandro CA |
Sunday, August 4
| Sun Aug 4 | I Ran Marathons Majestic August Series – Sun | San Antonio TX |
| Sun Aug 4 | Mo' Bell Trail Races | Burns TN |
Saturday, August 10
| Sat Aug 10 | Bear Creek Trail Half Marathon 10K & 5K | Martinez CA |
| Sat Aug 10 | Crandall Canyon Half Marathon 10K & 5K | Huntington UT |
| Sat Aug 10 | Dave McKay Memorial Half Marathon & 5K | Flagstaff AZ |
| Sat Aug 10 | Garlic Festival Half Marathon 10K & 5K | North Plains OR |
| Sat Aug 10 | Go Far Woman Half Marathon 10K & 5K | Fargo ND |
| Sat Aug 10 | I Ran Marathons Flagship Series – Lesotho | San Antonio TX |
| Sat Aug 10 | Mainly Marathons Northwest Series – Day 1 | Pendleton OR |
| Sat Aug 10 | Race the Reserve Marathon Half Marathon 10K & 5K | Coupeville WA |
| Sat Aug 10 | Run the Rockies Trail Half Marathon & 10K | Frisco CO |
Sunday, August 11
| Sun Aug 11 | Bridge of the Gods Half Marathon 10K & 5K | Cascade Locks OR |
| Sun Aug 11 | Camarillo Marathon Half Marathon 10K & 5K | Camarillo CA |
| Sun Aug 11 | East Bay Half Marathon 10K & 5K | East Providence RI |
| Sun Aug 11 | Mainly Marathons Northwest Series – Day 2 | Pendleton OR |
| Sun Aug 11 | Oaktown Half Marathon | Oakland CA |
| Sun Aug 11 | Steamboat Stinger Marathon & Half Marathon | Steamboat Springs CO |
| Sun Aug 11 | Viking Dash Trail Run Half Marathon 10K & 5K: Hell | Gregory MI |
Monday, August 12 – Friday, August 16
| Mon Aug 12 | Mainly Marathons Northwest Series – Day 3 | Clarkston WA |
| Tue Aug 13 | Mainly Marathons Northwest Series – Day 4 | Clarkston WA |
| Wed Aug 14 | Mainly Marathons Northwest Series – Day 5 | Lewiston ID |
| Thu Aug 15 | Mainly Marathons Northwest Series – Day 6 | Lewiston ID |
| Fri Aug 16 | Tread Nightly Half Marathon & 4-Mile | Charlotte NC |
Saturday, August 17
| Sat Aug 17 | Cheesehead Run Half Marathon 5K & Relay | Hilbert WI |
| Sat Aug 17 | Harder than Hell Half Marathon | Nixa MO |
| Sat Aug 17 | I Ran Marathons Flagship Series – Liberia | San Antonio TX |
| Sat Aug 17 | Madison Mini Marathon 5K & Kids Run | Madison WI |
| Sat Aug 17 | Moonlight Madness Half Marathon | Las Vegas NV |
| Sat Aug 17 | Run Elevated Half Marathon | Sandy UT |
| Sat Aug 17 | Running with the Bears Marathon Half Marathon & 10K | Greenville CA |
| Sat Aug 17 | Tread Brightly Half Marathon | Charlotte NC |
Sunday, August 18
| Sun Aug 18 | America's Finest City Half Marathon & 5K | San Diego CA |
| Sun Aug 18 | Anchorage RunFest Skinny Raven Half Marathon | Anchorage AK |
| Sun Aug 18 | Dog Days of Summer Half Marathon 10M 10K 5K & 1M | Denver CO |
| Sun Aug 18 | E.T. Full Moon Midnight Marathon Half Marathon 51K 10K & 5K | Rachel NV |
| Sun Aug 18 | I Ran Marathons Flagship Series – Libya | San Antonio TX |
| Sun Aug 18 | Leading Ladies Marathon & Half Marathon | Spearfish SD |
| Sun Aug 18 | Michigan 13.Wine Half Marathon & 5K | Baroda MI |
| Sun Aug 18 | Tour de Force Charity Run Half Marathon 10K & 5K | Plattsburgh NY |
Monday, August 19 – Friday, August 23
| Mon Aug 19 | Mainly Marathons Center of the Nation Series – Day 1 | Sterling CO |
| Tue Aug 20 | Mainly Marathons Center of the Nation Series – Day 2 | Chadron NE |
| Wed Aug 21 | Mainly Marathons Center of the Nation Series – Day 3 | Sundance WY |
| Thu Aug 22 | Mainly Marathons Center of the Nation Series – Day 4 | Belle Fourche SD |
| Fri Aug 22 | Mainly Marathons Center of the Nation Series – Day 5 | Bowman ND |
Saturday, August 24
| Sat Aug 24 | All-Out Runapalooza Half Marathon 10K & 5K | Arvada CO |
| Sat Aug 24 | Main to Main Marathon Half Marathon & 10K | Osage IA |
| Sat Aug 24 | Mainly Marathons Center of the Nation Series – Day 6 | Baker MT |
| Sat Aug 24 | Mesa Falls Marathon Half Marathon 10K & 5K | Ashton ID |
| Sat Aug 24 | Miles for Smiles Half Marathon 10K & 5K | Punxsutawney PA |
| Sat Aug 24 | Mount Nebo Marathon & Half Marathon | Payson UT |
| Sat Aug 24 | North Country Trail Marathon Half Marathons & 50-Mile | Wellston MI |
| Sat Aug 24 | Thirsty 13 Half Marathon | Durango CO |
| Sat Aug 24 | Tour de La Porte Half Marathon 10K & 5K | La Porte IN |
| Sat Aug 24 | Wausau Marathon Half Marathon & Relay | Wausau WI |
Sunday, August 25
| Sun Aug 25 | Blueberry Cove 13.1 Half Marathon | Tenants Harbor ME |
| Sun Aug 25 | Erie Half Marathon & 5K | Erie CO |
| Sun Aug 25 | Geneva Half Marathon | Geneva NY |
| Sun Aug 25 | I Ran Marathons Flagship Series – Liechtenstein | San Antonio TX |
| Sun Aug 25 | Iron Horse Half Marathon | North Bend WA |
| Sun Aug 25 | North Country Trail Half Marathon | Wellston MI |
Saturday, August 31
| Sat Aug 31 | Cochecho Challenge Half Marathon | Dover NH |
| Sat Aug 31 | I Ran Marathons Triple Crown Challenge – Daryayenoor | San Antonio TX |
| Sat Aug 31 | Lake Country Half Marathon & 8-Miler | Oconomowoc WI |
| Sat Aug 31 | Pocatello Marathon Half Marathon 10K & 5K | Pocatello ID |
| Sat Aug 31 | Rockin' Chocolate Marathon & Half Marathon | Madison WI |
| Sat Aug 31 | St. Joseph's Labor Day Half Marathon 10K & 5K | Hillsboro WI |
