Adult soccer players across the Denver metro area and Front Range can find year-round options for their year-long game. Leagues are offered through recreation departments, private sports complexes, social sports organizations, and social sports leagues. Outdoor adult soccer leagues are available across the region, particularly in spring and fall, with larger rosters and longer match times than indoor formats. Indoor soccer is particularly popular during winter months, particularly popular due to its flexibility and flexibility. The city of Boulder's parks and recreation department has opened its registration for outdoor spring leagues, with options such as a co-ed Sunday league and men’s and women’�s leagues on weekdays. The Denver Kickers Sports Club runs summer and fall leagues in Golden, with three age divisions: over-35, over-45, and over-60. Team registration fees vary from $900 to $1,100 per team per season, depending on facility, number of games, services, and facility size. Some leagues charge additional fees, while others charge separate referee fees. The sport's equipment requirements and rule enforcement vary across leagues.