TR1 Tribe Games - Ski erg ladder. 15 mins. Each partner completes 50m, then 100, 150m. So rising by 50m each time. I started 450m split but only got 253m in approx based on finishing score (3853m). I went first on this workout. I calculated roughly what metres I would have completed, then used the average 500m split of the whole workout to workout approx workout time.