The Ely Marathon is set for Saturday, and all indications are it will be one of the biggest in its history. Lindsay said Tuesday that “We are expecting around 200 for the full marathon, 400 for the half, 50 kids, 300 for the 5k and 60 canoes.”Ely’s Whiteside Park will once again serve as the focal point of the marathon weekend both days. Along with the marathon and its associated races, the Ely Marathon has carved its own niche on the road racing scene with its canoe portage division. The Sheridan Street detour will run from South Central Avenue over to James Street, to Eighth Avenue East to White Street and eventually 17th Avenue East. “You’ll go to James Street this year and then to Eighth, and then on to White Street and down to 17th Avenue.