extreme weather

21 runners dead following extreme weather at Chinese ultramarathon

The Huanghe Shilin Mountain Marathon saw 21 deaths and an additional eight runners hospitalized

By Ben Snider-McGrath

Course records fall at Arrowhead 135 despite extreme cold

By Anne Francis

Medical resources tested at Boston Marathon

By Anne Francis

Marathon and half-marathon at Ottawa’s Winterman cancelled due to cold

By Tim Huebsch