10,000 Runners Hit Boylston Street Before Marathon Monday Even Arrives

The 2026 Boston 5K and B.A.A. Invitational Mile pack serious star power into Patriots' Day weekend — before the marathon even starts.

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Jessy Carveth
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Jessy is our Senior News Editor, pro cyclist and former track and field athlete with a Bachelors degree in Kinesiology.

Senior News Editor

Most people think Boston Marathon weekend begins on Monday. Anyone who’s been there knows it starts Saturday on Boylston Street, when the crowds are already thick, the energy is already electric, and the fast people are already racing.

On April 18, the Boston 5K and B.A.A. Invitational Mile return — with over 10,000 athletes expected to cross the finish line, and a professional field that would make any track fan’s head spin.

“The most anticipated weekend of road racing in America gets started with the Boston 5K and B.A.A. Invitational Mile,” said B.A.A. President and CEO Jack Fleming. “We’re counting down the days until the world comes to run in Boston.”

10,000 Runners Hit Boylston Street Before Marathon Monday Even Arrives 1

The Women’s 5K Has a Problem: Too Much Talent

Ethiopia’s Gela Hambese won in 2025 with a 14:53 — nearly an event record. She’s back. But so is essentially every fast woman on the planet.

Medina Eisa (14:16 5K personal best) leads the field on paper. Add Melknat Wudu, 2022 World Champion steeplechaser Norah Jeruto, and 2024 Olympian Daisy Jepkemei, and you have one of the more stacked short-road fields in recent memory. American Taylor Roe, who nearly caught Hambese last year, returns alongside World Cross Country representatives Katie Izzo and Emily Venters. Local favorite Maggie Donahue of Wellesley runs for the B.A.A. High Performance Team — and the home crowd.

10,000 Runners Hit Boylston Street Before Marathon Monday Even Arrives 2

The Men’s Race Has Two Former Champions and Two Faster Guys

Cooper Teare (2024 winner) and Morgan Beadlescomb (2023 winner) both want a second Boston 5K title. Neither is the fastest man entered. That would be Ethiopia’s Addisu Yihune and Mezgebu Sime, who have each run 12:49 for 5,000 meters — about four seconds clear of Teare’s personal best. Sean McGorty, a three-time U.S. World Championships team member, and Patrick Kiprop (59:14 half-marathon) add even more depth to a field that doesn’t have an obvious winner.

10,000 Runners Hit Boylston Street Before Marathon Monday Even Arrives 3

The Mile: A World Silver Medalist and a Hometown Favorite

Kenya’s Dorcus Ewoi won the 2025 B.A.A. Invitational Mile in 4:42.57, then picked up a World Championships silver medal in the 1500m. She’s the name to beat. But Massachusetts native and 2021 Olympian Heather MacLean — racing the mile here for the first time since 2022 — will have the crowd behind her.

The men’s field includes the entire Atlanta Track Club squad that recently set a 4x800m indoor world record. All 15 men entered have broken four minutes for the mile.

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Jessy Carveth

Senior News Editor

Jessy is our Senior News Editor and a former track and field athlete with a Bachelors degree in Kinesiology. Jessy is often on-the-road acting as Marathon Handbook's roving correspondent at races, and is responsible for surfacing all the latest news stories from the running world across our website, newsletter, socials, and podcast.. She is currently based in Europe where she trains and competes as a professional cyclist (and trail runs for fun!).

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