Spring Half Marathons 2027: All 64 US half marathons from March to May, with typical race-morning weather and hills
Every active US half marathon we list that usually runs in March through May. Beside each one is what race morning is usually like there, from that race's own past editions, and how much the course climbs, from its course map. 61 have announced their 2027 date; the rest show the date they usually run, marked with a ~. Updated November 10, 2026.
March 2027 (19)
- Havasu Half MarathonLake Havasu City, AZ · Mar 6, 202730.4 ft/mi394 ft up, 398 ft down56–58°F start, high 58°Fno rain in 3 years
- Cary Greenways Half-MarathonCary, NC · Mar 7, 202715.6 ft/mi205 ft up, 76 ft downToo few past race mornings on file
- Hampton Half MarathonHampton, NH · Mar 7, 2027Hills not measured yet31–44°F start, high 44°Fno rain in 4 years
- That Dam Run Half MarathonGreenwood Village, CO · Mar 7, 202722.1 ft/mi290 ft up, 290 ft down37–42°F start, high 51°Fno rain in 3 years
- Hiawassee Half MarathonHiawassee, GA · Mar 13, 202757.1 ft/mi748 ft up, 739 ft downToo few past race mornings on file
- Montgomery Half MarathonMontgomery, AL · Mar 13, 202738.2 ft/mi476 ft up, 501 ft downToo few past race mornings on file
- Wanderlust Half MarathonFredericksburg, TX · Mar 13, 202744.2 ft/mi579 ft up, 570 ft down55–59°F start, high 68°Fno rain in 5 years
- Moonlight Beach Half MarathonEncinitas, CA · Mar 14, 2027Hills not measured yet49–55°F start, high 55°Fno rain in 5 years
- Tucson Shamrock Half MarathonTucson, AZ · Mar 14, 20278.8 ft/mi116 ft up, 116 ft down45–50°F start, high 59°Fno rain in 3 years
- United Airlines NYC HalfNew York City, NY · Mar 14, 202734.4 ft/mi396 ft up, 451 ft down33–47°F start, high 37°Fno rain in 15 years
- Okie Half MarathonMuskogee, OK · Mar 20, 2027Hills not measured yet47–54°F start, high 53°Fno rain in 7 years
- Wendell Foster Half MarathonOwensboro, KY · Mar 20, 2027Hills not measured yet35–40°F start, high 41°Fno rain in 4 years
- First Call Half MarathonWaukesha, WI · Mar 21, 20279.7 ft/mi126 ft up, 127 ft downToo few past race mornings on file
- New Bedford Half MarathonNew Bedford, MA · Mar 21, 202729.2 ft/mi377 ft up, 383 ft down37–46°F start, high 42°Fno rain in 12 years
- Syracuse Half MarathonSyracuse, NY · Mar 21, 2027Hills not measured yet21–43°F start, high 32°Frain in 1 of 5 years
- Windward Half MarathonKailua, HI · Mar 21, 202711.3 ft/mi148 ft up, 140 ft down71–74°F start, high 74°Frain in 2 of 7 years
- Como La Flor Half MarathonLong Beach, CA · Mar 27, 2027Hills not measured yetToo few past race mornings on file
- Mill Town Half Marathon (WA)Everett, WA · Mar 27, 2027Hills not measured yetToo few past race mornings on file
- Run the Cove Half MarathonOwens Cross Roads, AL · Mar 27, 2027Hills not measured yetToo few past race mornings on file
April 2027 (24)
- Blue Bell Fun RunBrenham, TX · Apr 3, 202749.2 ft/mi611 ft up, 645 ft down52–64°F start, high 63°Fno rain in 20 years
- Carpe Diem - Carpe Noctem Half MarathonCommerce Township, MI · Apr 3, 2027Hills not measured yet33–38°F start, high 44°Fno rain in 6 years
- CraftHalf Half MarathonWinston-Salem, NC · Apr 3, 2027Hills not measured yetToo few past race mornings on file
- Fool's Dual Half MarathonGloucester, MA · Apr 3, 202763.2 ft/mi829 ft up, 828 ft down39–40°F start, high 43°Fno rain in 5 years
- Panther City Half MarathonFort Worth, TX · Apr 3, 202715.3 ft/mi192 ft up, 201 ft down44–51°F start, high 53°Fno rain in 4 years
- Scranton Half MarathonScranton, PA · Apr 4, 2027Hills not measured yetToo few past race mornings on file
- Half Marathon UnpluggedColchester, VT · Apr 10, 202720.7 ft/mi270 ft up, 272 ft down37–42°F start, high 42°Frain in 2 of 18 years
- Hattiesburg Half MarathonHattiesburg, MS · Apr 10, 2027Hills not measured yetToo few past race mornings on file
- Outlaw Half MarathonFredericksburg, TX · Apr 10, 2027Hills not measured yetToo few past race mornings on file
- April Fools Half MarathonAtlantic City, NJ · Apr 11, 2027Hills not measured yetToo few past race mornings on file
- Coffee Milk Half MarathonNorth Kingstown, RI · Apr 11, 202720.5 ft/mi269 ft up, 256 ft down41–44°F start, high 46°Frain in 1 of 8 years
- Catamount Climb Half MarathonCullowhee, NC · Apr 17, 2027Hills not measured yet33–38°F start, high 50°Fno rain in 5 years
- Hogeye Half MarathonSpringdale, AR · Apr 17, 2027Hills not measured yetToo few past race mornings on file
- Hub City Half MarathonHagerstown, MD · Apr 18, 202741.4 ft/mi543 ft up, 543 ft downToo few past race mornings on file
- Stamford Run Club Half MarathonStamford, CT · Apr 18, 2027Hills not measured yetToo few past race mornings on file
- Bigfoot Half MarathonEstes Park, CO · Apr 24, 2027Hills not measured yetToo few past race mornings on file
- Harmon Field Half MarathonTryon, NC · Apr 24, 202733.3 ft/mi418 ft up, 436 ft downToo few past race mornings on file
- Salt Lake City Half MarathonSalt Lake City, UT · Apr 24, 202789.9 ft/mi612 ft up, 1,179 ft down41–48°F start, high 49°Frain in 3 of 22 years
- Vincennes Historical Half MarathonVincennes, IN · Apr 24, 2027Hills not measured yetToo few past race mornings on file
- Brooklyn Half MarathonBrooklyn, NY · Apr 25, 2027Hills not measured yet50–54°F start, high 55°Frain in 1 of 5 years
- Gettysburg Blue-Gray Half MarathonGettysburg, PA · Apr 25, 2027Hills not measured yet44–50°F start, high 52°Frain in 2 of 12 years
- Siesta Half MarathonSan Antonio, TX · Apr 25, 202739.4 ft/mi484 ft up, 516 ft downToo few past race mornings on file
- Tear Drop Half MarathonChatsworth, GA · Apr 25, 2027Hills not measured yet51–63°F start, high 64°Fno rain in 8 years
- Maybelline Women's Half MarathonNew York City, NY · ~Apr 2027Hills not measured yet50–55°F start, high 53°Fno rain in 5 years
May 2027 (21)
- Cinco de Mayo Half MarathonLong Beach, CA · May 1, 2027Hills not measured yetToo few past race mornings on file
- May the Fourth Race Half MarathonFarmington, UT · May 1, 20273.4 ft/mi44 ft up, 44 ft down64–73°F start, high 71°Frain in 1 of 7 years
- TopCity Half MarathonTopeka, KS · May 1, 202732.3 ft/mi423 ft up, 423 ft down42–50°F start, high 51°Fno rain in 5 years
- Des Moines Women's Half MarathonDes Moines, IA · May 2, 2027Hills not measured yet48–55°F start, high 61°Fno rain in 4 years
- Kirkland Half MarathonKirkland, WA · May 2, 202740.7 ft/mi518 ft up, 533 ft down45–53°F start, high 52°Frain in 3 of 17 years
- Queens Half Marathon - SpringQueens, NY · May 2, 2027Hills not measured yetToo few past race mornings on file
- Superhero Half MarathonMorris Township, NJ · May 2, 2027Hills not measured yet52–62°F start, high 64°Fno rain in 6 years
- 500 Festival Mini-MarathonIndianapolis, IN · May 8, 20277.6 ft/mi99 ft up, 88 ft down49–58°F start, high 61°Fno rain in 30 years
- Enjoy Your Life Happy Half MarathonAmesbury, MA · May 8, 202734.1 ft/mi447 ft up, 447 ft downToo few past race mornings on file
- Greenbrier Half MarathonWhite Sulphur Springs, WV · May 8, 2027Hills not measured yet39–54°F start, high 53°Frain in 1 of 5 years
- Ho'omau Half MarathonEwa Beach, HI · May 8, 2027Hills not measured yet71–72°F start, high 76°Fno rain in 3 years
- Race4Warriors Half MarathonLewes, DE · May 8, 2027Hills not measured yet57–61°F start, high 66°Fno rain in 6 years
- Santa Barbara Wine Country Half MarathonSolvang, CA · May 8, 2027Hills not measured yet49–52°F start, high 54°Fno rain in 18 years
- Hometown Half Marathon - DenverDenver, CO · May 9, 2027Hills not measured yetToo few past race mornings on file
- La Jolla Half MarathonLa Jolla, CA · May 15, 202763.5 ft/mi832 ft up, 807 ft down59–61°F start, high 60°Fno rain in 4 years
- Margarita Half MarathonGreenland, NH · May 16, 2027Hills not measured yetToo few past race mornings on file
- Marine Corps Historic HalfFredericksburg, VA · ~May 202748.3 ft/mi633 ft up, 633 ft down55–63°F start, high 63°Frain in 2 of 19 years
- RBC Brooklyn Half MarathonBrooklyn, NY · May 22, 202718.2 ft/mi136 ft up, 238 ft down58–62°F start, high 64°Fno rain in 6 years
- Bill Snyder Highway Half and 5KManhattan, KS · May 29, 2027Hills not measured yet54–64°F start, high 66°Frain in 2 of 8 years
- Boston's Run To Remember Half MarathonBoston, MA · May 30, 2027Hills not measured yet54–65°F start, high 62°Frain in 2 of 21 years
- Virginia Wine Country Half MarathonLoudoun, VA · ~May 202740.4 ft/mi530 ft up, 530 ft down56–68°F start, high 68°Frain in 2 of 14 years
Cool race mornings
Races whose typical start is 40°F to 50°F, over at least 5 past race mornings, by date.
- Coffee Milk Half MarathonApr 11, 2027 · 43°F start
- Salt Lake City Half MarathonApr 24, 2027 · 44°F start
- Gettysburg Blue-Gray Half MarathonApr 25, 2027 · 47°F start
- TopCity Half MarathonMay 1, 2027 · 44°F start
- Kirkland Half MarathonMay 2, 2027 · 49°F start
- Greenbrier Half MarathonMay 8, 2027 · 42°F start
Flattest courses
Courses under 10 ft per mile of climb, flattest first.
- May the Fourth Race Half MarathonMay 1, 2027 · 3.4 ft/mi
- 500 Festival Mini-MarathonMay 8, 2027 · 7.6 ft/mi
- Tucson Shamrock Half MarathonMar 14, 2027 · 8.8 ft/mi
- First Call Half MarathonMar 21, 2027 · 9.7 ft/mi
In New England
Spring half marathons in Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont, by date.
- Hampton Half MarathonHampton, NH · Mar 7, 2027
- New Bedford Half MarathonNew Bedford, MA · Mar 21, 2027
- Fool's Dual Half MarathonGloucester, MA · Apr 3, 2027
- Half Marathon UnpluggedColchester, VT · Apr 10, 2027
- Coffee Milk Half MarathonNorth Kingstown, RI · Apr 11, 2027
- Stamford Run Club Half MarathonStamford, CT · Apr 18, 2027
- Enjoy Your Life Happy Half MarathonAmesbury, MA · May 8, 2027
- Margarita Half MarathonGreenland, NH · May 16, 2027
And 1 more in the list above.
Race-morning weather
The start temperature is the middle half of past race mornings, and the high is the warmest hour while a 9:00-per-mile runner is on course, both from the race's own past editions near its usual date. 40 of the 64 races have at least three of them on file. Each race page has the full history and, closer to race day, the forecast.
How hilly
Climb per mile is the larger of the course's total climb and total descent, divided by its distance, from the race's course map, the same measure as our flat lists. Under 10 ft per mile is flat, under 20 ft per mile nearly flat and under 30 ft per mile gently rolling. 29 of the 64 courses are measured; the rest have no course map yet or one we are still checking.
Questions
How many half marathons are there in spring 2027?
We list 64 US half marathons from March to May 2027: 19 in March, 24 in April and 21 in May.
Which spring half marathons usually have cool race mornings?
Of the races with at least 5 past race mornings on file, 6 usually start between 40°F and 50°F, including Coffee Milk Half Marathon (Apr 11, 2027, 43°F at the start), Salt Lake City Half Marathon (Apr 24, 2027, 44°F at the start), Gettysburg Blue-Gray Half Marathon (Apr 25, 2027, 47°F at the start) and TopCity Half Marathon (May 1, 2027, 44°F at the start). The temperatures come from each race's own past race mornings.
What are the flattest spring half marathons?
By climb per mile from each course map: May the Fourth Race Half Marathon (3.4 ft/mi), 500 Festival Mini-Marathon (7.6 ft/mi) and Tucson Shamrock Half Marathon (8.8 ft/mi). We have measured 29 of the 64 courses on this list.
What spring half marathons are in New England?
9 on this list: Hampton Half Marathon (Hampton, NH, Mar 7, 2027), New Bedford Half Marathon (New Bedford, MA, Mar 21, 2027), Fool's Dual Half Marathon (Gloucester, MA, Apr 3, 2027), Half Marathon Unplugged (Colchester, VT, Apr 10, 2027), Coffee Milk Half Marathon (North Kingstown, RI, Apr 11, 2027) and Stamford Run Club Half Marathon (Stamford, CT, Apr 18, 2027), and 3 more below.
Are the 2027 dates confirmed?
61 of the 64 races have announced their 2027 date. The rest show the date they usually run, with a ~ in front, and the list is updated as dates come in. Check the race's own site before you book travel.
Looking for something else? Browse every half marathon by date, see the flattest half marathons or compare races for your goal time.