JEN A. MILLER

Cities in the U.S. and elsewhere have made strides, but challenges remain.

Here’s what the evidence suggests.

If you are considering the procedure, but are worried about its permanence, here is what experts want you to know.

More than 600,000 people ran an ultramarathon in 2018, a jump of nearly 350 percent in the last decade.

Readers’ tips for coping with runs in this sidewalk-sizzling season.

It’s the start of sandal season, but wearing ones without the right support can lead to foot pain.