Let me start by stating, Sufferfest is the real deal and I’m a believer. I have used Sufferfest for over a year and had great results improving FTP. My rider type is a time trialist. Last winter I used the preseason mountain bike plan (followed it pretty strictly and increased FTP from 280 to 327) and it worked great to prepare me for my first 35 mile gravel race. I even hit the podium.
Although that race was great, I struggle SO much in a couple other areas. Mountain biking with the typical high power surges leaves me walking up hills after about an hour. I can’t recover from the high efforts. Also when I try to ride gravel for longer distances, I am toast after around 40 miles (2 hours). So I can go from 2nd place in a 35 mile gravel race one week to middle of the pack on a 50 mile gravel race a couple weeks later. This happens regardless of amount or type of nutrition and hydration. I’m 205 pounds and 6’4" so that’s a lot of weight to move up hills.
Thoughts on how to improve those two areas - endurance and repeatability? I have 24 weeks before my first races in the spring. Any recommendations on plans? I’m basically only about a year and a half into my biking journey so maybe it isn’t unusual to lack endurance? Thanks!