Ann Arbor Ultimate

Welcome to Ann Arbor Ultimate

Welcome! Ann Arbor Ultimate (A2U) is a non-profit, volunteer driven organization dedicated to promoting ultimate in the Ann Arbor, MI area. Ann Arbor Ulimate sponsors local ultimate leagues that include divisions for players of all levels, from beginner to seasoned club player. Ultimate offers a great way to make new friends and get – or stay – in shape. And we’re always looking for new, energetic players and volunteers to help keep the games flowing.

For more information about Ann Arbor Ultimate and the folks who run it, check out our About Us page.

To get on the email list that we will send notifications and details to, join our announcements list.

For other questions, comments, or concerns, please see our Contact Us page.

When does Ann Arbor Ultimate play throughout the year?

In general, we offer play during the following seasons:

  • Winter League: January through early March
  • Spring League: late March through May
  • Summer League: June through August
  • Fall League: September through early November
  • Late Fall League: mid-November through December

Formats for Play

Cap and Fill

Cap and Fill is a way of formatting play to accommodate as many players as possible while organizing a format that allows all players to participate to their full ability and desire. After registration closes, based on the number of woman-matching players registered, this division may be split into two; one division will host all women-matching players plus a number of man-matching players, while the other will host only man-matching players. As a fallback in the case that the division does not receive enough woman-matching player registrations to split, the division will fall back to our Co-Rec format (all gender matching preferences distributed evenly amongst teams).


Competitive divisions are intended to offer a high level of play for experienced players. These divisions are suggested for those that have played club or college ultimate for at least one year. Typically, teams are selected via draft process rather than our normal team generation process. While safety and spirit are still top priorities, competition and intensity can be additional focuses.


The Co-Rec format will form as many teams as possible in one division, distributing all gender-matching preferences evenly among teams. Typically, teams will be made up of 10-30% woman-matching players.

This is Ann Arbor Ultimate's default format.


Mixed divisions (also known as "50-50") are where there is an equal balance of gender-matching-players.


Open division play is considered to be any division with no explicit target gender-matching balance for teams. Generally, Open divisions consist of primarily man-matching players, but woman-matching players are welcome to participate.


Women's division play consists of 100% woman-matching players. As part of its gender equity efforts, Ann Arbor Ultimate aims to provide an outlet for woman-matching players to have a welcoming and safe environment to play ultimate (especially for new players).

Overview of Seasons


  • Generally ~8 weeks of play
  • Starts in early January
  • ~2 divisions (including mixed)
  • Level of play tends to be higher as the concentration of club and college players is higher


  • Generally ~8 weeks of play
  • Starts in late March or early April
  • ~3 divisions (including mixed, and women's)


  • Generally ~12 weeks of play
  • Starts in early-to-mid June
  • ~4 divisions (including mixed, women's, and competitive)


  • Generally ~12 weeks of play
  • Starts in early-to-mid September
  • ~3 divisions (including mixed, women's)

Late Fall

  • Generally ~6 weeks of play
  • Starts in mid-November
  • ~1 division

Last Updated: April 17th, 2023