Non-binary athletes will be able to run in next year’s Boston Marathon without having to register as members of the men’s or women’s divisions, it has been confirmed.The Boston Athletic Association, which administers the prestigious marathon, said it’s been working to expand opportunities for non-binary people - not just for the marathon but for the BAA’s other races, which include a 5K, a 10K and a half marathon. Organisers confirmed the change as registration opened on Monday for the 127th running of the marathon on 17 April 2023. A field of about 30,000 is expected for next spring’s edition of the.