The Ontario Ultra and Trail races (OUTRace) is comprised of the Ontario Trail Series (OTS) and the Ontario Ultra Series (OUS), which evolved to provide Ontario runners with a venue for competing in a series of races. The trail series races are less than the marathon distance (typically 25K) and the ultra series races are longer than a marathon (50K up to 100 miles). Runners who compete in an OTS or OUS race are automatically entered into the series.