Team Calculation

I have created a relational database for my local running club.
It has 2 tables, 1.information on athletes which includes name, athlete's club etc as well as an individual athlete number which is the primary key. and 2. A positioning sheet with the place as an autonumber (This is an autonumber as the first details enter will be first place (autonumber=1), second being the second autonumber (2)), athlete number and time field. There is also a query which merges the information (including club) from the two tables to make up a results sheet.

In these competitions there is a team event this works by the first 4 people of any one club to come over the finish line. The positions of these athletes are then added and the team with the lowest score wins. The resulting information should be calculated for all teams in the race. There can be an A, B, C team etc for the clubs, meaning that the first four over the line for a club are team A, next 4 are team B etc. It also needs to cancel out any teams with less than 4 people. Meaning i f9 people run for the striders and place 1, 5, 6, 7, 9, 10, 13, 15, 25 then Team A is 1, 5, 6, 7 and Team B 9, 10, 13, 15 the runner who came 25th is cancelled out. Athletes from other clubs place inbetween (2, 3, 4, 8...etc)

My problem is how to create this list of team results in the Access database.