1 hour ago, Janno Rillo said:Running 5x per week sounds more like a runners training which is supported by GB, not the other way around. This combo definitely requires some serious dedication, lots of free time and certain level of fitness. The whole idea of training is to stimulate your body to adapt to specific stresses. If you do strength training, then you get stronger, if you run, then you get better at running. If you spend more time on running than doing GB, then most probably your body adapts more to running specifics and less to GB, which in some context might have reverse effect. You have to make a compromise here, because it's not very likely that you make good progress on both.
I agree, but the original question was about progressions for endurance. You will have read in my post (in bold) that running 5x per week would negatively affect your GST.
If you want to progress in running then that is an established step by step route but phase 2, running 5k three times per week, would fit with Coach Sommer's suggestions for GST athletes once they are adapted to the workload of the Foundation and Handstand work.