League stage
All 16 teams entered the competition at this stage. A random draw determined which teams faced each other in each of the four rounds. No team could meet each other twice in the group stage. The top eight teams went into a seeded draw for the quarter-finals, while the bottom three teams entered a relegation playoff. If teams were level on points and a place in the quarter-final was at stake, a playoff would have been conducted to determine which team went through. Table Round 1: • Réalt na Mara 1–5, '''0-15 St Eunan's''', 31/7/2020 • '''St Michael's 3-5''', 0-8 Glenswilly, 31/7/2020 • Naomh Conaill 3-20, 0-6 Milford, 1/8/2020 • Cill Chartha 4-21, 0-7 Termon, 1/8/2020 • Na Cealla Beaga 1–6, 1-12 Glenfin, 1/8/2020 • Four Masters 0–7, 2-17 Gaoth Dobhair, 2/8/2020 • '''St Naul's 1-14''', 1-13 An Clochán Liath, 2/8/2020 • Seán MacCumhaills 1-10, 1-9 Ard an Rátha, 2/8/2020 Round 2: • St Eunan's 1–9, 1-9 Cill Chartha, 7/8/2020 • Gaoth Dobhair 3-13, 0-6 Na Cealla Beaga, 8/8/2020 • Termon 2–12, 2-16 Réalt na Mara, 8/8/2020 • Glenfin 1-14, 0-11 St Naul's, 8/8/2020 • Milford 0–14, '''1-14 St Michael's''', 8/8/2020 • Ard an Rátha 0–5, 0-18 Naomh Conaill, 9/8/2020 • An Clochán Liath 0–11, 1-11 Seán MacCumhaills, 9/8/2020 • Glenswilly 2-14, 1-13 Four Masters, 9/8/2020 Round 3: • Naomh Conaill 6-18, 0-8 Termon, 14/8/2020 • Seán MacCumhaills 1–12, 1-12 Glenfin, 15/8/2020 • Four Masters 4-10, 1-14 An Clochán Liath, 1/8/2020 • St Naul's 0–5, 4-11 Gaoth Dobhair, 1/8/2020 • Réalt na Mara 2-18, 1-12 Milford, 16/8/2020 • '''St Michael's 1-11''', 0-12 Ard an Rátha, 16/8/2020 • Cill Chartha 4-24, 1-10 Glenswilly, 16/8/2020 • Na Cealla Beaga 0–6, '''3-13 St Eunan's''', 16/8/2020 Round 4: • St Eunan's -vs- St Michael's, 23/8/2020 • An Clochán Liath -vs- Na Cealla Beaga, 23/8/2020 • Ard an Rátha -vs- Réalt na Mara, 23/8/2020 • Termon -vs- St Naul's, 23/8/2020 • Glenswilly -vs- Naomh Conaill, 23/8/2020 • Milford -vs- Four Masters, 23/8/2020 • Gaoth Dobhair -vs- Seán MacCumhaills, 23/8/2020 • Glenfin -vs- Cill Chartha, 23/8/2020 ==Knock-out stage==
Knock-out stage
Quarter-finals Semi-finals The semi-final draw was held on 6 September, producing the same pairings as this stage of the previous competition.
Final The final was originally scheduled for 19 September 2020. However, it emerged on 21 September that a Cill Chartha player had tested positive for the
coronavirus; initially the game was announced to be proceeding as scheduled. A short while later though, the final was postponed until 7 October. However, the GAA suspended all club fixtures with immediate effect on 5 October, citing "post-match celebrations and a lack of social distancing at certain events" elsewhere in the country (i.e.
Cork,
Meath) as "disappointing and problematic". Naomh Conaill retained the title, in the most controversial of circumstances, a 4–2 penalty shootout victory after extra-time on Saturday, 14 August 2021. Naomh Conaill's opponent lodged an appeal against the result on Tuesday, 17 August 2021. Eventually Naomh Conaill's victory was allowed, though the club was fined. ==Relegation play-offs==