On-demand data is provided for real-time exercise experience including identifying available classes, receiving exercise class selection, retrieving associated leaderboard data, decompressing leaderboard data, and delivering exercise class content including leaderboard data to an exercise apparatus. Systems and methods further include receiving a class end condition, gathering data from the selected exercise class, compressing the gathered data, and appending the compressed data to stored leaderboard data. Compressing includes sampling a points from each user's workout through a recursive process including identifying a first point, last point and at least one mid-point of the workout, and for each successive pair of sampled points, identifying a mid-point that is furthest away from a line segment between the pair of sampled points, and adding the mid-point to the plurality of points if a distance between the mid-point and the line segment is greater than a predetermined threshold.