From the doses you listed it looks like you’re interested in replacement levels. Go get tested for legal TRT. At least you’ll know where your baseline hormones are at. If you’re low, get treatment. If not, forget about it. Test Cyp isn’t going to help your marathon body if you’re natural levels are fine
Steroids are really not great for endurance performance.
EQ is pretty good but that’s about it.
Don’t take any more than your TRT dose of test. It’s gonna hurt performance.
Before getting into BB seriously I was an endurance athlete. From Ironman triathlon to long course MTB/gravel racing to ultra marathon. The best products for endurance performance are ostarine and cardarine. It’s a great combination that will help you go much longer at sub threshold pace even pushing threshold and keeping muscle fatigue/lactic acid at bay.
New to the boards but been around a minute. I think taking a reasonable dose of TRT and potentially GH for recovery and injury prevention would cover the base and adding in more novel compounds that can aid in endurance such as cardarine and SLU-PP-332 would be the cherry on top.