See all August 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, August 1
Sunday, August 2
| Sun Aug 2 | Delaware Running Festival Marathon Half Marathon & Relay | Wilmington DE |
| Sun Aug 2 | Mini Muskie Half Marathon | Belleville WI |
| Sun Aug 2 | Triple Threat Half Marathon 5K & 1-Mile | Rockport MA |
| Sun Aug 2 | E.T. Full Moon Midnight Half Marathon | Rachel NV |
| Sun Aug 2 | Hoot Half Marathon & 10K | Lewis Center OH |
| Sun Aug 2 | Skyline Endurance Run 50K & Half Marathon | Castro Valley CA |
Saturday, August 8
Sunday, August 9
| Sun Aug 9 | Bear Creek Trail Half Marathon 10K & 5K | Martinez CA |
| Sun Aug 9 | Beaverton Half Marathon 10K & 5K | Beaverton OR |
| Sun Aug 9 | Bridge of the Gods Half Marathon 10K & 5K | Cascade Locks OR |
| Sun Aug 9 | Funky Monkey Half Marathon 10K & 5K | Seekonk MA |
| Sun Aug 9 | Humboldt Bay Marathon & Half Marathon | Arcata CA |
| Sun Aug 9 | Northwest Series Marathon Half Marathon 10K & 5K – Day 2 | Pendleton OR |
| Sun Aug 9 | Run for the Elk Half Marathon | Benezette PA |
| Sun Aug 9 | SHE Power Half Marathon & 5K | Indianapolis IN |
| Sun Aug 9 | Steamboat Stinger Marathon & Half Marathon | Steamboat Springs CO |
| Sun Aug 9 | Treasured Haven Farm Veggie Run Half Marathon | Rush City MN |
Monday, August 10 – Friday, August 14
| Mon Aug 10 | Northwest Series Marathon Half Marathon 10K & 5K – Day 3 | Clarkston WA |
| Tue Aug 11 | Northwest Series Marathon Half Marathon 10K & 5K – Day 4 | Clarkston WA |
| Wed Aug 12 | Northwest Series Marathon Half Marathon 10K & 5K – Day 5 | Lewiston ID |
| Thu Aug 13 | Bear Lake Trifecta Marathon & Half Marathon | Montpelier ID |
| Thu Aug 13 | Northwest Series Marathon Half Marathon 10K & 5K – Day 6 | Lewiston ID |
| Fri Aug 14 | Bear Lake Trifecta Marathon & Half Marathon | Cokeville WY |
Saturday, August 15
| Sat Aug 15 | Area 13.1 Half Marathon & Terrestrial 5K | Roswell GA |
| Sat Aug 15 | Beachfront Run Half Marathon 10K & 5K | Ventura CA |
| Sat Aug 15 | Bear Lake Trifecta Marathon & Half Marathon | Garden City UT |
| Sat Aug 15 | Carderock Charge Half Marathon 10K & 5K | Potomac MD |
| Sat Aug 15 | Dragons Den Half Marathon 10K & 5K | San Antonio TX |
| Sat Aug 15 | Harder than Hell Half Marathon | Nixa MO |
| Sat Aug 15 | Huckleberry Half Marathon 10K & 5K | Welches OR |
| Sat Aug 15 | Motus Knoxville Trail Run Half Marathon | Knoxville TN |
| Sat Aug 15 | Mount Sneffels Marathon & Half Marathon | Ouray CO |
| Sat Aug 15 | PC2PG Half Marathon | Lindon UT |
| Sat Aug 15 | Run with the Horses Marathon Half Marathon & 10K | Green River WY |
| Sat Aug 15 | Running Between the Vines Half Marathon 5-Mile & 5K | Jackson MI |
| Sat Aug 15 | Running with the Bears Marathon Half Marathon & 10K | Greenville CA |
| Sat Aug 15 | Tacoma Narrows Half Marathon | Tacoma WA |
| Sat Aug 15 | Wasatch Half Marathon & 10K | Midway UT |
Sunday, August 16
| Sun Aug 16 | America's Finest City Half Marathon & 5K | San Diego CA |
| Sun Aug 16 | Anchorage RunFest Skinny Raven Half Marathon | Anchorage AK |
| Sun Aug 16 | Beaver Creek Half Marathon 10K & 5K | Avon CO |
| Sun Aug 16 | Dog Days of Summer Half Marathon 10-Mile 10K & 5K | Denver CO |
| Sun Aug 16 | Fall Creek Falls Half Marathon 10K & 5K | Pikeville TN |
| Sun Aug 16 | Geneva Half Marathon & Relay | Geneva NY |
| Sun Aug 16 | Happy Half Marathon & 5K | Ellicottville NY |
| Sun Aug 16 | Michigan 13.Wine Half Marathon & 5K | Baroda MI |
| Sun Aug 16 | Mud and Chocolate Half Marathon & 4.5-Mile Trail Run | Sammamish WA |
| Sun Aug 16 | Tour de Force Charity Run Half Marathon 10K & 5K | Plattsburgh NY |
| Sun Aug 16 | Trust Trail Fest Half Marathon 10K & 5K | Kennebunkport ME |
Monday, August 17 – Friday, August 21
| Mon Aug 17 | Center of the Nation Marathon Half Marathon 10K & 5K – Day 1 | Sterling CO |
| Tue Aug 18 | Center of the Nation Marathon Half Marathon 10K & 5K – Day 2 | Chadron NE |
| Wed Aug 19 | Center of the Nation Marathon Half Marathon 10K & 5K – Day 3 | Sundance WY |
| Thu Aug 20 | Center of the Nation Marathon Half Marathon 10K & 5K – Day 4 | Belle Fourche SD |
| Fri Aug 21 | Center of the Nation Marathon Half Marathon 10K & 5K – Day 5 | Bowman ND |
Saturday, August 22
Sunday, August 23
| Sun Aug 23 | Canaan Valley Half Marathon & 10K | Davis WV |
| Sun Aug 23 | Corporal Cole Memorial Half Marathon & 5K | Norridgewock ME |
| Sun Aug 23 | Diablo Trail Marathon Half Marathon 50K 10M & 4M | Clayton CA |
| Sun Aug 23 | Emerald City Half Marathon & Quarter Marathon | Dublin OH |
| Sun Aug 23 | Erie Half Marathon & 5K | Erie CO |
| Sun Aug 23 | Fierce Running Festival Half Marathon 10K & 5K | North Kingstown RI |
| Sun Aug 23 | Hellbender Half Marathon & 5K | Bear Gap PA |
| Sun Aug 23 | Lake Placid Marathon & Half Marathon | Lake Placid NY |
| Sun Aug 23 | Leading Ladies Marathon & Half Marathon | Spearfish SD |
Monday, August 24 – Friday, August 28
| Thu Aug 27 | Fiesta Series Marathon Half Marathon 10K & 5K – Day 1 | Las Cruces NM |
| Fri Aug 28 | Fiesta Series Marathon Half Marathon 10K & 5K – Day 2 | Las Cruces NM |
Saturday, August 29
Sunday, August 30
| Sun Aug 30 | Black Diamond Express Half Marathon & 5K | Mendon NY |
| Sun Aug 30 | Blueberry Cove 13.1 Half Marathon | Tenants Harbor ME |
| Sun Aug 30 | Fiesta Series Marathon Half Marathon 10K & 5K – Day 4 | Las Cruces NM |
| Sun Aug 30 | Iron Horse Half Marathon | North Bend WA |
| Sun Aug 30 | North Country Trail Half Marathon & 50K | Wellston MI |
| Sun Aug 30 | Santa Rosa Marathon & Half Marathon | Santa Rosa CA |
| Sun Aug 30 | Sioux Falls Marathon Half Marathon 5K & Relay | Sioux Falls SD |
| Sun Aug 30 | Squaw Valley Half Marathon & 8-Miler | Olympic Valley CA |
Monday, August 31
| Mon Aug 31 | Pine Tree Marathon & Half Marathon | Portland ME |
