More than 16,000 runners are expected to take part in one of the five different races that make up the BMO Vancouver Marathon on Sunday, May 7, 2017.

Most will run the half-marathon, which is capped at 10,000 entrants. The full marathon, which has been held since 1972, can host up to 5,000 runners. There is also an eight-kilometre run, a relay and a kid's race.

By comparison, the annual Vancouver Sun Run often hosts around 40,000 runners.

The start line for both the marathon and half-marathon is at Queen Elizabeth Park and the finish is at Pender Street between Bute and Thurlow Streets.

There are significant road closures in effect for all the races. The finish line area was closed on Saturday, while most of Sunday's closures begin around 6 a.m. PT.

The marathon course takes runners out of Queen Elizabeth Park through Kerrisdale, Dunbar, UBC, Point Grey, Kitsilano, the West End, Stanley Park and then back downtown.

Some road closures will be in place for only 90 minutes as runners pass through areas of the city. Others, like the finish line area, will remain in place until 7 p.m.

The half-marathon start time is 7:00 a.m., while marathoners will go at 8:30 a.m. and have a limit of seven hours to complete the race.

There are runners from more than 60 countries participating in the race; organizers say up to 90,000 people line the course to cheer.

"We welcome runners from across the globe and encourage them to enjoy their experience pre and post-race at a slower place in one of the world's most beautiful cities," wrote the organizing committee in a release.

TransLink says it will increase service on the Canada Line and provide shuttles to help runners and spectators get to the start line.

The Canada Line will operate on its regular Sunday schedule but will offer increased train frequency from 4:48 a.m. until 8:15 a.m.

Close to two dozen bus routes will also be modified because of the race on Sunday.

TransLink, along with the Vancouver International Marathon Society, is offering a free shuttle service to the start line on race day.

Shuttles can be boarded at Scott Road Station, Lonsdale Quay, Brentwood Mall, Patterson Station and Lougheed Town Centre. 

For cyclists, TravelSmart is sponsoring BEST's Bicycle Valet, which will offer secure, temporary bike storage free of charge. The valet is located at the finish line at Pender Street, west of Burrard Street, and is open from 6 a.m. until 5 p.m.