The Boston Athletic Association has unveiled the elite fields for the 2026 BAA 10K, the second leg of the BAA Distance Medley, with around 11,000 runners on the start list for the June 21 race through Back Bay and Cambridge. The professional fields are deeper than in recent editions, helped by the BAA's decision to fold the 10K into Athletics East Coast's invitational tour, and the race once again starts and finishes on Charles Street alongside the Boston Common at 8am Eastern. Open registration sold out at the end of February, but charity entries through the Mass General Brigham team programme are still available.
Reigning wheelchair champion Daniel Romanchuk returns to defend his BAA 10K title, bringing in a year on the Diamond and Abbott circuits that has already seen him take the Boston Marathon men's wheelchair race for a fourth time in April. He starts as a heavy favourite again on a course whose mid-race rise across the Harvard Bridge has historically suited his power-on-the-uphills style. The women's wheelchair race will see Susannah Scaroni and Madison de Rozario both back for what is shaping up as the most competitive matchup of the day.
The professional running fields show a clear pattern: the BAA has sharpened its focus on athletes who treat the BAA Distance Medley as a genuine seasonal goal rather than a tune-up. The men's race is led by Athing Mu's training partner Bashir Abdi, returning to the road after a long altitude block in Iten, with American Conner Mantz, 2025 BAA 10K runner-up Stephen Sambu, and a strong Ethiopian quartet headed by Berihu Aregawi. Aregawi's 26:36.74 personal best on the track makes him the sharpest of the field on raw speed, but the rolling Charles River loop has historically gone to runners with marathon strength.
The women's professional field is anchored by reigning Boston Marathon champion Sharon Lokedi, who is using the 10K as a low-key tune for a planned New York attempt in November. American 5,000m specialist Elise Cranny is the most-watched US entry, building from a track block toward the autumn Worlds half-marathon. Senayet Getachew, Tsige Gebreselama and Kenya's Hellen Lobun fill out the front of the field, with Lokedi and Lobun arriving fresh from a high-altitude block at Iten. The course record from Mary Wacera's 30:50 in 2017 has stood for nearly a decade and is well within the range of the strongest entrants on a still morning.
The BAA 10K sits in the middle of the BAA Distance Medley, which awards a separate prize purse to runners who complete the BAA 5K, the 10K and the BAA Half Marathon in a calendar year. The medley field is now in the low four-figure range, and the BAA confirmed today that next year's 10K will move to a Sunday slot for the first time in five years to clear space for the Pride parade. Spectators planning to watch on June 21 should expect rolling road closures across Beacon Hill and Cambridge from 6am, with the Government Center T stop again the recommended access point.