May 2021 Half Marathons

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 May 2021 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, May 1


Sat May 1	Apple Blossom Wine & Hard Cider Challenge Half Marathon 10K & 5K	Delaplane VA
Sat May 1	Deja Vu Half Marathon 10K & 5K	Las Vegas NV
Sat May 1	Do or Die Half Marathon & 5K	Boonville MO
Sat May 1	Fruita Trail Half Marathon	Fruita CO
Sat May 1	Illinois Marathon Half Marathon 10K 5K & Relay	Champaign IL
Sat May 1	IronHorse Marathon Half Marathon 10K & 5K	Riceville IA
Sat May 1	Lake Run Half Marathon 12K 7K & 3-Mile	Hudson IL
Sat May 1	Less Popular Brooklyn Half Marathon	Brooklyn NY
Sat May 1	Memphis Big BBQ Half Marathon 10K & 5K	Memphis TN
Sat May 1	Muddy River Marathon & Half Marathon	Cape Girardeau MO
Sat May 1	Provo City Half Marathon & 5K	Provo UT
Sat May 1	Run to Breathe Half Marathon & 5K	Portersville PA
Sat May 1	Strolling Jim Marathon Half Marathon 40-Mile & 10K	Wartrace TN
Sat May 1	Tacos y Cerveza Trail Half Marathon 10K & 5K	Fort Worth TX
Sat May 1	Trail Nut Half Marathon & 10K	Bedford VA
Sat May 1	Trillium Trek Trail Half Marathon & 5K	Gainesville GA
Sat May 1	Wisconsin Marathon Half Marathon & 5K	Kenosha WI

Sunday, May 2


Sun May 2	Bay Bridge Half Marathon	Oakland CA
Sun May 2	Colorado Marathon Half Marathon 10K & 5K	Fort Collins CO
Sun May 2	Dallas Marathon Half Marathon & Relay	Dallas TX
Sun May 2	Fall Creek Falls Half Marathon & 50K	Spencer TN
Sun May 2	Frederick Running Festival Half Marathon 5K & Relay	Frederick MD
Sun May 2	Great Western Half Marathon	St. Charles IL
Sun May 2	Grayson Highlands Half Marathon	Mouth of Wilson VA
Sun May 2	Greenwood Furnace Trail Challenge Half Marathon	Huntingdon PA
Sun May 2	Lake Norman Half Marathon & 5K	Mooresville NC
Sun May 2	Middlebury Maple Run Half Marathon & Relay	Middlebury VT
Sun May 2	National Women's Half Marathon & 8K	Washington DC
Sun May 2	OC Marathon & Half Marathon	Newport Beach CA
Sun May 2	Pittsburgh Marathon Half Marathon & Relay	Pittsburgh PA
Sun May 2	Potomac River Run Marathon & Half Marathon	Washington DC
Sun May 2	Pro Football Hall of Fame Marathon & Half Marathon	Canton OH
Sun May 2	Redding Road Race Half Marathon & 7-Mile	Redding CT
Sun May 2	Reno's Biggest Little Half Marathon	Reno NV
Sun May 2	Run for the Animals Half Marathon & 10K	Onancock VA
Sun May 2	Run Michigan Cheap Half Marathon 10K & 5K – Petoskey	Petoskey MI
Sun May 2	Snohomish Women's Run Half Marathon & 10K	Everett WA
Sun May 2	Spring Prairie Fire Half Marathon	Wichita KS

Saturday, May 8


Sat May 8	500 Festival Mini Marathon & 5K	Indianapolis IN
Sat May 8	Adamant Half Marathon & Relay	Adamant VT
Sat May 8	Beat the Street for Little Feet Half Marathon 10K & 5K	Sweetwater TX
Sat May 8	BeYOUtiful Half Marathon & 5K	Oconomowoc WI
Sat May 8	Breakneck Point Trail Runs	Beacon NY
Sat May 8	Bridgehampton Half Marathon	Bridgehampton NY
Sat May 8	Carbon Valley Half Marathon	Firestone CO
Sat May 8	Cowtown Half Marathon 10K & 5K	Fort Worth TX
Sat May 8	Dino Half Marathon & 5K	Vernal UT
Sat May 8	Greenbrier Half Marathon	White Sulphur Springs WV
Sat May 8	Highlander Half Marathon & 5K	Radford VA
Sat May 8	Hippie Chick Half Marathon & Quarter Marathon	Hillsboro OR
Sat May 8	May the Fourth Half Marathon 10K & 5K	Farmington UT
Sat May 8	Mine Shaft Half & Tommyknocker Ultras	Golden CO
Sat May 8	Mother's Day Half Marathon	Rockaway Park NY
Sat May 8	Paducah Iron Mom Half Marathon & Relay	Paducah KY
Sat May 8	Scenic City Trail Half Marathon	Chattanooga TN
Sat May 8	Shelburne Half Marathon 10K & 5K	Shelburne VT
Sat May 8	Spring Burke Lake Half Marathon 10K & 5K	Fairfax Station VA
Sat May 8	Starved Rock Country Marathon & Half Marathon	Ottawa IL
Sat May 8	Texas Switchback Trail Marathon Half Marathon 10K & 5K	Johnson City TX
Sat May 8	Trip 'n' Tumble Half Marathon & 10K	Flinstone MD
Sat May 8	Veteran Suicide Awareness & Prevention Half Marathon	Missoula MT
Sat May 8	Viola Valley Half Marathon	Viola TN
Sat May 8	Yolo Festival of Races	Greenville OH
Sat May 8	Yosemite Half Marathon	Bass Lake CA

Sunday, May 9


Sun May 9	Brooklyn Mother's Day Half Marathon 10K & 5K	Brooklyn NY
Sun May 9	Gasparilla Distance Classic Half Marathon & 8K	Tampa FL
Sun May 9	Gresham Lilac Run Half Marathon & 10K	Gresham OR
Sun May 9	Mother's Day Half Marathon & 5K	Kirkland WA
Sun May 9	Prairie Series Marathon Half Marathon 10K & 5K – Day 1	Breckenridge MN
Sun May 9	Run This Mother Half Marathon & 5K	San Antonio TX
Sun May 9	Wildflower Trail Marathon Half Marathon & 7-Mile	Bastrop TX

Monday, May 10 – Friday, May 14


Mon May 10	Prairie Series Marathon Half Marathon 10K & 5K – Day 2	Breckenridge MN
Tue May 11	Prairie Series Marathon Half Marathon 10K & 5K – Day 3	Baltic SD
Wed May 12	Prairie Series Marathon Half Marathon 10K & 5K – Day 4	Sioux City IA
Thu May 13	Prairie Series Marathon Half Marathon 10K & 5K – Day 5	South Sioux City NE

Saturday, May 15


Sat May 15	Brookings Marathon Half Marathon & Relay	Brookings SD
Sat May 15	Clear Creek Half Marathon	Sevier UT
Sat May 15	Cleveland Half Marathon	Cleveland TN
Sat May 15	Dayton Spring Half Marathon & 5K	Dayton OH
Sat May 15	Flower Moon Trail Marathon Half Marathon 50-Mile & 5K	Pawhuska OK
Sat May 15	Harpers Ferry Half Marathon	Harpers Ferry WV
Sat May 15	Hidden Hills Ultra Marathon Half Marathon 50-Mile 10K & 5K	Strawn TX
Sat May 15	Independence Bowl Kickoff K's Half Marathon & 5K	Shreveport LA
Sat May 15	La Jolla Half Marathon & 5K	La Jolla CA
Sat May 15	Mountains to Main Street Half Marathon	Greenville SC
Sat May 15	NYCRUNS Queens Half Marathon	Queens NY
Sat May 15	Prairie Series Marathon Half Marathon 10K & 5K – Day 7	St. Joseph MO
Sat May 15	Race4Warriors Marathon Half Marathon 10K & 5K	Lewes DE
Sat May 15	Vallecito Lake Heavy Half	Bayfield CO

Sunday, May 16


Sun May 16	Crazy Clam Half Marathon 5-Mile & 5K	Smithfield RI
Sun May 16	Earth Rock Run Half Marathon	Amesbury MA
Sun May 16	Happy Valley Half Marathon	Northampton MA
Sun May 16	Lake Trail Half Marathon 10K & 5K	Fairfax Station VA
Sun May 16	Michigan Shores Mini Half Marathon & 5K	New Buffalo MI
Sun May 16	NYCRUNS Queens Half Marathon	Queens NY
Sun May 16	Rite-Aid Cleveland Marathon & Half Marathon	Cleveland OH
Sun May 16	Tobacco Road Marathon & Half Marathon	Cary NC
Sun May 16	Vermont Sun Half Marathon 10K & 5K	Lake Dunmore VT
Sun May 16	Windermere Marathon & Half Marathon	Spokane WA
Sun May 16	York YMCA Marathon & Half Marathon	York PA

Monday, May 17 – Friday, May 21


Mon May 17	Pine Tree Marathon & Half Marathon	Portland ME
Tue May 18	Granite State Marathon & Half Marathon	Nashua NH
Wed May 19	Maple Leaf Marathon & Half Marathon	Springfield VT
Thu May 20	Old Colony Marathon & Half Marathon	Westfield MA
Fri May 21	Nutmeg State Marathon & Half Marathon	Hartford CT

Saturday, May 22


Sat May 22	Berry Half Marathon 10K & 5K	Rome GA
Sat May 22	Bill Snyder Highway Half Marathon & 5K	Manhattan KS
Sat May 22	Dances with Dirt Gnaw Bone Half Marathon	Nashville IN
Sat May 22	Dandelion Run Half Marathon 10K & 4-Mile	Derby VT
Sat May 22	DeWitt Take a Breath for PH and Get Moving for MS Half Marathon	DeWitt MI
Sat May 22	Fiesta de Mayo Half Marathon 10K & 5K	Irving TX
Sat May 22	Fountainhead Half Marathon & 10K	Fairfax Station VA
Sat May 22	Hamden Hills Half Marathon & 5K	Hamden CT
Sat May 22	Jim Thorpe Area Running Festival	Jim Thorpe PA
Sat May 22	Madeline Island Marathon & Half Marathon	La Pointe WI
Sat May 22	Martha's Vineyard Marathon Half Marathon & Relay	Oak Bluffs MA
Sat May 22	Red Island Marathon & Half Marathon	Warwick RI
Sat May 22	Soaring Eagle Half Marathon 10K & 5K	Sammamish WA
Sat May 22	Thelma and Louise Marathon Half Marathon 10K & Relay	Moab UT
Sat May 22	Whitefish Marathon Half Marathon & 5K	Whitefish MT
Sat May 22	Zachariah's Acres Spring Run Walk & Roll Half Marathon & 5K	Oconomowoc WI

Sunday, May 23


Sun May 23	406 Queen Bee Half Marathon 10K & 5K	Billings MT
Sun May 23	Barr Lake Half Marathon & 15K	Brighton CO
Sun May 23	Chicago Spring Half Marathon & 10K	Chicago IL
Sun May 23	Chicagoland Spring Marathon & Half Marathon	Schaumburg IL
Sun May 23	Fountainhead Half Marathon & 10K	Fairfax Station VA
Sun May 23	Great Sacandaga Half Marathon	Northville NY
Sun May 23	Reflection Run Half Marathon 10K & 5K	Washougal WA
Sun May 23	SHE Power Half Marathon & 5K	Indianapolis IN
Sun May 23	Spring Georgetown Half Marathon & 5K	Washington DC
Sun May 23	Willamette Valley Marathon Half Marathon 10K & Relay	Salem OR

Saturday, May 29


Sat May 29	Armed Forces Half Marathon & 12K	Concord CA
Sat May 29	Dash Around Kampeska Half Marathon & Relay	Watertown SD
Sat May 29	Great American River Run Half Marathon & 5K	Memphis TN
Sat May 29	Growing Green Challenge Half Marathon & Half-of-a-Half	Rush City MN
Sat May 29	Happy Girls Run Half Marathon 10K & 5K	Bend OR
Sat May 29	Multiple Sclerosis Marathon & Half Marathon	Dallas TX
Sat May 29	Prince of Wales Island Marathon Half Marathon & Relay	Craig AK
Sat May 29	Redfish Lake Lodge Run Half Marathon	Stanley ID
Sat May 29	Salute the Troops Half Marathon & 5K	Fond du Lac WI
Sat May 29	Spring Memorial Half Marathon 10K & 5K	Springfield VA
Sat May 29	Stumptown Trail Half Marathon	Portland OR
Sat May 29	Trent-Waldron Glacier Half Marathon & 10K	Anchorage AK
Sat May 29	Valkyrie Trail Marathon Half Marathon 50K & 4-Mile	Colorado Springs CO
Sat May 29	Wonderland Mountain Challenge Half Marathon & 10K	Oak Hill WV

Sunday, May 30


Sun May 30	Badass Texas Half Marathon 10K & 5K	Waco TX
Sun May 30	Bobcat Marathon Half Marathon 50K 10K & 5K	Proctorville OH
Sun May 30	Buffalo Marathon Half Marathon & Relay	Buffalo NY
Sun May 30	Coeur d'Alene Marathon Half Marathon 10K & 5K	Coeur d'Alene ID
Sun May 30	Laurel Memorial Half Marathon 10K & 5K	Lorton VA
Sun May 30	Memorial Day Run Half Marathon 10K & 5K	Lyons WI
Sun May 30	Minocqua Northwoods Escape Marathon Half Marathon & 5K	Minocqua WI
Sun May 30	Mountains 2 Beach Marathon & Half Marathon	Ventura CA
Sun May 30	North Mitten Half Marathon 10K & 5K	Thompsonville MI
Sun May 30	Wayne's World Marathon & Half Marathon	Dallas TX
Sun May 30	Wyoming Marathon Races Medicine Bow Half Marathon	Laramie WY

Monday, May 31


Mon May 31	Fallen Soldiers Memorial Half Marathon 10K & 5K	Great Falls MD
Mon May 31	Georgia Peach Jam Half Marathon & 5K	Cumming GA
Mon May 31	Memorial Day Marathon & Half Marathon	Dallas TX
Mon May 31	Salamander State Marathon Half Marathon 50K 10K & 5K	Huntington WV