I’m in the 100 mile MidSouth in a few days and this will be my first really long gravel race where I have a power meter on my bike. I’ve done a few 50 to 70 milers. From what I recall listening to the podcast I should watch Normalized Power and Intensity Factor.
What values should I try to stay under? 70% of FTP? 60% of FTP? Any guidance or something else I should watch ?
I am also in MidSouth this year and I am considering this same question. I did not have a power meter on my gravel bike last year when I did a century. I have done a few rides with friends this year of around 65 miles (100k) and managed a IF of .75. I’m thinking .7 seems pretty reasonable for the 100 miles assuming I stay under control in the beginning and pace correctly. What I don’t want to do is go out too strong and fall off later in the day. I think a conservative start will make for a more enjoyable day overall
If I was racing MidSouth this year, I would be targeting a finishing IF in the mid .7’s. I would tolerate seeing upper .8’s for the first hour or so IF it means I’m in a group, If you don’t make a conscious decision to back off at some point, your body will make it for you so err on the side of caution here. I would also avoid going above the upper threshold limit(105% of FTP) like the plague. Also in my experience ALOT of people start coasting the second they crest the top of a hill. You don’t need to stay on the gas, but 40-50% of FTP here isn’t gonna hurt you.
I used to train with 3s power and average power on all my bikes. After my first gravel race I realized that average power isn‘t the most appropriate metric for such efforts. (My average power was quite low but I felt destroyed). I found that due to the loose underground I had to coast and change pace a lot more than I would on my road bike and many more surges due to the rougher terrain. I found that normalized power is much better for such rides, ended up switching AVG to NP on my gravel and mountainbike, on my road bike I still have AVG but since the efforts during normal training rides without big intervals are steadier and there is not much difference between both metrics.