More than 100 professional athletes from around the globe, including defending and former champions, will return for a pair of Boston Athletic Association races that will kick off Patriots’ Day weekend.

First up on the morning of April 19, the professional athletes will lead a field of more than 10,000 participants along a new route for the Boston 5K. The race will finish at the Boston Marathon Finish Line on Boylston Street for the first time.

Charles Philibert-Thiboutot, a 2022 champion from Canada, and his fellow Canadian Olympians Justyn Knight and Thomas Fafard headline the men’s field.

For the women, Biya Simbassa will try to extend the American winning streak to three against the fastest woman in the field, Ethiopia’s Medina Eisa.

Reigning wheelchair division champions Marcel Hug and Eden Rainbow-Cooper also return to defend their titles.

For the B.A.A. Invitational Mile, 2024 champion Casey Comber hopes to become the first man to win back-to-back years since Olympic medalist Nick Willis did so in 2013 and 2014.

Japan’s Nozomi Tanaka will make her debut in the race and will be challenged by 2022 NCAA Indoor mile champion Micaela Degenero.

In addition to the professionals, student-athletes from each of the eight cities and towns that make up the Boston Marathon route will compete in a Scholastic Mile and Middle School 1K.

Boston 5K fields

WOMEN

• Medina Eisa (ETH): 14:16.54 (London, 2023)
• Tsigie Gebreselama (ETH): 14:18.76 (Eugene, 2024)
• Lemlen Hailu (ETH): 14:34.53 (Paris, 2023)
• Melknat Wudu (ETH): 14:36.65 (Bruxelles, 2024)
• Grace Loibach (KEN): 14:42.63 (Paris, 2023)
• Laura Galvan (MEX): 14:43.94 (Budapest, 2023) NR
• Gela Hambese (ETH): 14:47.74 (Doha, 2024)
• Vanessa Fraser (USA): 14:48.51i (Boston, 2020)
• Norah Jeruto (KAZ): 14:51.73 (Berlin, 2019)
• Lemlem Nibret (ETH): 14:56.00 (Montesson, 2023)
• Bethany Hasz (USA): 15:05.80 (Los Angeles, 2024)
• Emily Lipari (USA): 15:07.22 (San Juan Capistrano, 2022)
• Erika Kemp (USA): 15:10.10 (Boston, 2021)
• Taylor Roe (USA): 15:15.01i (Boston, 2024)
• Hannah Steelman (USA): 15:19.69 (Portland, 2024)
• Dominique Scott (RSA): 15:20.84i (Boston, 2020)
• Gracelyn Larkin (CAN): 15:21.68i (Boston, 2025)
• Charlotte Prouse (CAN): 15:26.01 (Boston, 2018)
• Roisin Flanagan (IRL): 15:26.32 (Walnut, 2023)
• Eilish Flanagan (IRL): 15:33.37i (Boston, 2023)
• Megan Hasz (USA): 15:33.48 (Los Angeles, 2023)
• Cleo Boyd (CAN): 15:44.14 (Raleigh, 2024)
• Alexandra Lucki (CAN): 15:49.82 (Los Angeles)
• Lilly Tuck (CAN): 15:53.76 (Philadelphia, 2024)
• Katie Kellner (USA): 15:56.42 (Guelph, 2014)
• Rachel Hyland (USA): 16:06.42i (Boston 2021)
• Erin Gregoire (USA): 16:19.31 (NYC, 2025)
• Ryann Helmers (USA): 16:21.99 (Charlottesville, 2023)
• Stevie Lawrence-Wrist (GBR): 17:18.70 (Allendale, 2021)

MEN

• Justyn Knight (CAN): 12:51.93 (Firenze, 2021)
• Patrick Dever (GBR): 13:04.05i (Boston, 2024)
• Thomas Fafard (CAN): 13:05.07 (Bruxelles, 2024)
• Amon Kemboi (KEN): 13:06.30i (Boston, 2024)
• Dawit Seare (ERI): 13:07.77 (Wien, 2024)
• Charles Philibert-Thiboutot (CAN): 13:12.76 (San Juan Capistrano, 2022)
• Sam Parsons (GER): 13:12.78i (Boston, 2023) NR
• Biya Simbassa (USA): 13:19.12 (San Juan Capistrano, 2021)
• Reid Buchanan (USA): 13:27.03 (Los Angeles, 2023)
• John Gay (CAN): 13:29.82 (Birmingham, 2022)
• Andrew Alexander (CAN): 13:29.91i (Boston, 2023)
• Jean Simon Desgagnes (CAN): 13:33.38 (Azusa, 2024)
• Henry McLuckie (GBR): 13:36.26 (Walnut, 2023)
• Mitchell Ubene (CAN): 13:36.71 (Langley, 2022)
• Connor Black (CAN): 13:38.09 (Langley, 2022)
• Afewerki Zeru (USA): 13:44.58 (Walnut, 2022)
• Nicholas Bannon (CAN): 13:45.56 (Langley, 2022)
• Joey Berriatua (USA): 13:49.16 (San Juan Capistrano, 2020)
• Oisín Ó Gailín (IRL): 13:49.61i (Boston, 2023)
• Max Turek (CAN): 13:50.37i (Boston, 2022)
• Mitchell Dervin (USA): 13:57.58i (Boston, 2024)
• Ben Connor (GBR): 14:08.11 (Boston, 2014)
• Ben Garner (USA): 14:09.16 (Azusa, 2024)
• Brian Harvey (USA): 14:13.93 (Princeton, 2012)
• Colin Cernik (USA): 14:14.52 (Boston, 2024)
• Daniel Johanning (CRI): 14:16.79 (Azusa, 2024)
• Josh Kalapos (USA): 14:21.04 (NYC, 2024)
• Aaron Willingham (USA): 14:22.39 (Boston, 2024)

WOMEN’S WHEELCHAIR

• Hannah Babalola (NGR)
• Christie Dawes (AUS)
• Patricia Eachus (SUI)
• Eden Rainbow-Cooper (GBR)
• Michelle Wheeler (USA)

MEN’S WHEELCHAIR

• Hermin Garic (USA)
• Marcel Hug (SUI)
• Jetze Plat (NED)
• Daniel Romanchuk (USA)
• Geert Schipper (NED)
• Brian Siemann (USA)
• Johnboy Smith (GBR)
• David Weir (GBR)
• Sho Watanabe (JPN)
• WOMEN’S PARA ATHLETICS DIVISION
• Tatsiana Khvitsko-Trimborn (USA): T61
• Kelly Bruno (USA): T64
• Sayers Grooms (USA): T72

MEN’S PARA ATHLETICS DIVISION

• Wajdi Boukhili (TUN): T12
• El Amin Chentouf (MOR): T12
• Roy Jebabli (TUN): T12
• Thomas Cantara (USA): T20
• Aminullah Tissaoui (TUN): T38
• Atsbha Gebremeskel (ETH): T46
• Richard Whitehead (GBR): T61
• Marko Cheseto Lemteuki (USA): T62
• Brian Reynolds (USA): T62
• Michael Anwar (USA): T72

B.A.A. Invitational Mile Professional Fields

Women

• Dorcus Ewoi (KEN): 4:22.39i (Boston, 2025)
• Julie-Anne Staehli (CAN): 4:27.20i (Boston, 2024)
• Laurie Barton (USA): 4:27.83i (Clemson, 2025)
• Nozomi Tanaka (JPN): 4:28:54 (Boston, 2025) NR
• Micaela Degenero (USA): 4:29.66 (Middletown, 2024)
• Annika Reiss (USA): 4:31.07i (Boston, 2025)
• Erin Teschuk (CAN): 4:31.21i (NYC, 2023)
• Amaris Tyynismaa (USA): 4:32.56i (Boston, 2023)
• Maddy Berkson (USA): 4:33.55i (Boston, 2022)
• Abbe Goldstein (USA): 4:34.15i (Seattle, 2023)
• Alison Andrews-Paul (NZL): 4:37.86i (Seattle, 2024)
• Madison Trippett (USA): 4:43.19i (Boston, 2024)
• Anna Vess (USA): 4:44.77i (Allendale, 2025)

Men

• Luke Houser (USA): 3:51.73i (Seattle, 2024)
• Derek Johnson (USA): 3:53.13i (Boston, 2025)
• Mick Stanovsek (AUS): 3:53.38i (Boston, 2025)
• Isaac Basten (USA): 3:53.54i (Boston, 2024)
• Kasey Knevelbaard (USA): 3:53.64 (Raleigh, 2024)
• Austen Dalquist (USA): 3:53.77i (Fayetteville, 2025)
• Foster Malleck (CAN): 3:53.82i (Boston, 2025)
• Sair Salgado (USA): 3:56.17 (Middletown, 2024)
• Davis Bove (USA): 3:56.38 (Nashville, 2022)
• Christian Noble (USA): 3:56.65i (Boston, 2025)
• Aaron Ahl (CAN): 3:57.21 (Eagle Rock, 2022)
• Casey Comber (USA): 3:58.44 (Wilmington, 2022)
• Miles Smith (USA): 3:59.47i (Boston, 2025)