Skagit Flats Marathon

Set in Burlington, Washington in September 2026, the Skagit Flats Marathon delivers exactly what its name promises: a genuinely flat course that sits just above sea level with virtually no meaningful elevation to fight. This is a road marathon built for runners chasing a fast time or those who want to conserve energy for a strong finish, since the gently rolling terrain means you won't spend the second half battling steep climbs. The 42.2-kilometer loop stays true to the Pacific Northwest lowlands, which typically means cool weather and potentially damp conditions by late summer, so prepare accordingly for the seasonal climate. If you're targeting a personal best or need a confidence-building race on forgiving terrain, this one checks the box without the pretense.