Tried to do 40 yesterday but I
ran into a run and had to redirect. I choose poorly and ended up with 35 miles instead. Almost immediately after took my son out on his inaugural ride on his new CX bike for 10 miles. We averaged 10 mph, though I attribute that to his hesitation and lack of shifting skills. I kept telling him to shift 'up' meaning up the cassette and he thought I meant up as in the way his gripshifters work and was going down instead.
(it's not exactly that as the brakes are different but it's close enough)
I'm sure that by the time he has to do the 30 mile course in May he'll be fine. He just needs to get used to not being able to see what 'number' the chain is on.
And then I had to mow the grass with a lawnmower that had the power assist go out, so lots of pushing.
Secondary question about that CX bike: I read some people talking about Sora shifters melting in heat. That sounds rediculous to me though.