I’m aiming for about 10 hours, at 3.low FTP. The biggest drivers of how I’ll do will be - not surprisingly for a long race - pacing, nutrition and hydration - and can I keep my energy levels up in the latter hours of the race.
SBT GRVL isn’t a pure climbers race, so absolute FTP is important in addition to W/kg.
For a very rough estimate, I think to go sub-8, you’d need to be in the mid 4s W/kg.
The winners will come it at about 6:30 (based on 2019 times).
I’m hoping to average 14mph - which this year has been doable for me for 5-7hr rides on similar terrain to the course. I think that would be at about 150W for me at an IF of about 0.65. 160lbs.
I could be way off on this, as I haven’t ridden the full course in one go before, and I don’t have a power meter on my bike.
I wasn’t clear above when I said mid 4s W/kg for sub 8. I should’ve clarified that was for sea level. For you at 8100ft, I’d say 4 or high 3s could do it.