A friend of mine is doing this set tomorrow. Totals up to 9,100.
The 12 days of Christmas, where each "day" = 1 lap.
So
1 (25)
2,1 (50,25)
3,2,1 (75,50,25)
4,3,2,1 (100,75,50,25)
etc.. till you end with
12,11,12,10,9,8,7,6,5,4,3,2,1
(300,275,250,225,200,175,150,125,100,75,50,25)
