Oh wow. That is quite the tall order. Is it one way? I have 30km to work and it's too long for me, other than do it occasionally. With the train i do like 8km one way.
A client of ours goes i think 35km, but he is riding 30+ km/h average on his 10000€* road bike, i don't see me ever doing that on any of the bikes i have.
Yup, each way, so 50mi/80km total per day perhaps a little more since I'd be going on side paths instead of on the highway.
I used to go about that fast on my old 11mi/17km commute and finish in 30-45 min, depending on wind direction. So with some training, I could probably do my new commute in ~1.5hr each way. It's not going to be a regular thing, just a goal I have. Maybe I'll do it more regularly if I get an ebike, and I probably will if I like the route.
For the train route, it's 3mi/5km to the stop, then 7mi/11km to my office. That's pretty reasonable, and I'll use that to train myself up to the full distance (e.g. skip a stop, then skip the train entirely). My office only has one bus that goes to it, and it's awkward to get to. If I did transit only, it would take >2 hours (car is 30-40 min), so the bike is a time savings.
I typed that out thinking that was what it had cost, but then i thought about it some more and it may have only have been like 6000€ or something, definitely a high end roadbike.
edit: i also was kinda skeptical what he claimed for his average speed, but turns out he was not exagerating, he 'proved' it by having a meeting with a co worker of mine somewhere further away and then rode to our office with his bike while my co worker drove his car back, i calculated his route and it must have been something like 33 km/h.
I served with a guy who did road biking, and 33km/h seems reasonable for a commute. Kinda not surprised at the 6000 euro price tag. Road bike tend to be expensive.