Boston Marathon 2024 real-time updates: who's running, weather ...

Hellen Obiri of Kenya won her second-straight Boston Marathon women's race with an unofficial time of 2:22:37. She's the first back-to-back winner of the event in nearly two decades. 

Obiri ran neck-and-neck with countrywoman Sharon Lokedi in the final miles, but pulled away for the final stretch.

Click here for more winners' results. 

There were several women's professional runners sharing the lead on Heartbreak Hill.

Sisay Lemma from Ethiopia is your 2024 men's Boston Marathon champion. He led wire-to-wire and won with a time of 2:06:18. His previous best Boston finish was 30th place in 2019.

Click here for a full roundup of winners.

Sisay Lemma held a wide lead over the men's professional runners through Heartbreak Hill.

In addition to the Boston Marathon, Monday also marked One Boston Day.

One Boston Day was created to honor the five victims of the 2013 Boston Marathon bombings.

The day began with a wreath-laying ceremony Monday morning.

A sea of runners begin the Boston Marathon near the starting line in Hopkinton. There are 30,000 runners from more than 100 countries taking part in today's race.

At 22 years old, Eden Rainbow-Cooper is a Boston Marathon champion! The wheelchair competitor from the United Kingdom won her race in 1:35:11.

Switzerland's Marcel Hug smashed his own course record in the men's wheelchair race, winning with a time of 1:15:32. This is his seventh Boston Marathon win. 

Keep track of all the winners here.

WBZ-TV's own Chris Tanaka is among the thousands of Boston Marathon runners.

Tanaka and Team Hoyt helped raise over $10,000 ahead of the run.

"I'm as ready as I'll ever be," Tanaka said.

Former New England Patriots star Rob Gronkowski got the festivities started Monday morning in his role as grand marshal.

The former tight end and four-time Super Bowl champ was the recipient of the B.A.A.'s Patriots' Award. The award is presented to someone who is "patriotic, philanthropic, and inspirational, and fosters goodwill and sportsmanship." 

And they're off! The professional men and women running the Boston Marathon have taken off from the starting line in Hopkinton.

The men's and women's wheelchair race kicked off shortly after 9 a.m. Participants include four-time women's wheelchair winner Manuela Schar from Switzerland. Her countryman Marcel Hug has won six times. 

One American to watch is former Boston Marathon winner Daniel Romanchuk in the men's wheelchair race. 

Everyone has their own reason to run the Boston Marathon.

For one man, the 26.2-mile course is torture - and that's exactly why he does it.

"I just like the pain. I like to go through it. I like to compete," a 4-time runner told WBZ-TV.

There are a number of marathon winners and notable runners hitting the course today.

That includes 2014 Boston Marathon champion Meb Keflezighi and 2018 winner Des Linden, along with 1968 champion Amby Burfoot.

Chris Nikic, a well-known runner with Down Syndrome, will be taking on the course wearing bib number 7796.

Former Boston Bruins captain Zdeno Chara will run the Boston Marathon again, wearing bib 3333.

This year's Boston Marathon will include a total of 29,451 runners, including people from 118 countries.

Residents from all 50 U.S. states will run this year's race.

Massachusetts residents make up 4,464 members of the field.

A total of 9,900 volunteers are making things run smoothly along the course.

The Boston Marathon forecast calls for a nearly perfect day for spectators along the route.

But it may be a bit warmer that runners would like to see.

The best news, however, is that there's no rain in the forecast.

If you've never run the Boston Marathon, it may be difficult to picture what you can expect.

A mile-by-mile guide to the course shows where the 26.2-mile course will take you as you run from Hopkinton to Boston on Marathon Monday.

The 2024 Boston Marathon marks 100 years since the starting line moved from Ashland to Hopkinton.

WBZ-TV's Levan Reid gave a look at how Hopkinton is marking the occasion. 

There are several ways you can track a runner during this year's Boston Marathon.

You can follow updates on the B.A.A. app, website, or social media.

You'll also be able to use those methods to get complete results.

There will be a lengthy list of road closures and traffic impacts due to the Boston Marathon.

You can find all of them here, including additional MBTA impacts.

According to the B.A.A., here are items are not allowed along the Boston Marathon course:

• Backpacks or other over-the-shoulder handbags
• Packages or other bulky items that are larger than 12x12x6 inches
• Fireworks or other flammable liquids
• Props such as sporting equipment, flagpoles, or other hard objects
• Suitcases of any kind
• Coolers, regardless of style
• Large blankets like comforters and sleeping bags
• Some containers such as glass, cans, or anything that carries more than one liter of liquid
• Costumes, including those that cover your face
• Weapons including guns, knives and pepper spray