Running 26.2 miles is an undertaking that's unpredictable. Two Fargo Marathon runners, both featured in separate stories by The Forum previewing the race, found that out Saturday when they both hit ...

Even if it feels like everyone around you is training to run a marathon these days, less than 1% of the population actually conquers the iconic distance. Why? Because running 26.2 miles isn’t easy.

Marathon runners consistently finished slower in cities with higher levels of dangerous particles in the air, researchers found. By Hiroko Tabuchi and Brad Plumer Every marathon runner has had a bad ...