The Marine Corps Marathon is this Sunday, and as many as 30,000 runners are expected to wind through the District and Northern Virginia for the 26.2-mile road race.


Thousands of runners take off at the start of the 2011 Marine Corps Marathon. (Jonathan Newton/THE WASHINGTON POST)

Weather:

Weather predictions for Sunday are looking pretty uncertain. Hurricane Sandy, the “Frankenstorm” heading our way, isn’t expected to seriously impact the region until late Sunday, but there’s a chance that rain will arrive by Sunday morning, dampening the MCM. Stay with Capital Weather Gang for the latest weather updates.

Transportation:

Metro will open early for runners on Sunday. The race begins at 7:55 a.m. and Metro officials say the system will open at 5 a.m., two hours earlier than usual. There will also be additional Blue Line trains pre- and post-race.

Where to watch and what else to do:

The Going Out Gurus have a round-up of Sunday’s best spectator spots and other race-related activities this weekend.

More on marathons:

Hit the road: Three marathon experts share advice on tackling the big race.

How green are our two legs? Is the lung-busting challenge of a marathon any more eco-friendly than biking or driving the same 26.2 miles?


View Photo Gallery: You’re likely seeing an influx of Marines in the Washington area in town for the Marine Corps Marathon this Sunday. Here are photos of Marines in action — and an explanation of the exclamation, “Oorah!’’