In a UEFA European Championship, also known as the Euro, the number of matches played depends on the format of the tournament. As of the latest edition in 2020, here is the breakdown of the number of matches:

• Group Stage: In the group stage, 24 teams are divided into six groups of four teams each. Each team plays against the other three teams in its group, resulting in a total of 36 matches.
• Round of 16: The top two teams from each group advance to the knockout stage, starting with the round of 16. This stage consists of 8 matches.
• Quarter-finals: The 8 winners from the round of 16 move on to the quarter-finals, which includes 4 matches.
• Semi-finals: The 4 victorious teams from the quarter-finals then compete in the semi-finals, totaling 2 matches.
• Final: The winners of the semi-finals face off in the final match to determine the champion.

Therefore, in total, a UEFA European Championship typically consists of 51 matches. It is important to note that the format of the tournament may change in future editions, so the number of matches could vary.

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