In the UEFA European Championship, each football match consists of two halves, each lasting 45 minutes. Therefore, the total duration of a standard football match in the UEFA European Championship is 90 minutes. However, this duration can be extended due to stoppage time, also known as injury time or added time.

Stoppage time is added to the end of each half to compensate for time lost during the game due to substitutions, injuries, time-wasting, and other interruptions. The amount of stoppage time is determined by the referee and is typically around 1-5 minutes per half, but it can vary depending on the circumstances of the match.

Therefore, in conclusion, a football match in the UEFA European Championship can last for 90 minutes of regular play time, plus any additional stoppage time deemed necessary by the referee.