The 2024 Boston Marathon will be broadcast live from Boston, Massachusetts Monday, April 15 via ESPN television network, and locally on WCVB Channel 5. 

From the event website:

LIVE LOCAL COVERAGE: WCVB CHANNEL 5

• Live coverage of the Boston Marathon will air on WCVB beginning at 4:00 a.m. ET through 8:00 p.m. ET.
• The race will be exclusively simulcast regionally on WCVB Channel 5’s Hearst Television owned sister-stations WMUR (Manchester, NH), WMTW (Portland/Auburn, ME), and WPTZ (Burlington, VT/Plattsburgh, NY).
• WCVB and all of its television partners will provide coverage of the marathon on their digital platforms and mobile apps.
• The Boston Marathon will also be live streamed on Very Local Boston, and the streaming platform will host year-round content featuring the B.A.A.
• WCVB will also serve as the first-ever exclusive broadcast partner for the B.A.A.’s Distance Medley races and will provide year-round coverage of the B.A.A. and its races, with a focus on the Boston Marathon.
• For more information, visit www.wcvb.com

LIVE NATIONAL COVERAGE: ESPN

• ESPN will broadcast the 128th Boston Marathon, scheduled to take place on Monday, April 15, 2024, on its flagship channel from 8:30 a.m. ET until 1:00 p.m. ET.
• In addition, ESPN will also have coverage of the race within SportsCenter before the live coverage and later in the day, as well as coverage appearing on other ESPN shows and platforms.
• For more information, visit www.espn.com