I did a similar commute at one point...on occasion. 33 miles one way, so 106km round trip.

I was in a pretty ideal situation at the time. I was able to work from home two days a week. I also had access to a bus, which covered 30 miles of the journey, and was set up for transporting bicycles. I usually just rode one way, which made a 36 mile day (33 + 3 miles to or from the bus.) The times I did the round trip were definitely fun, though ate up about five hours (I was on roads with traffic and stoplights.) And, there was the option to take one bus (6 miles round trip cycling), or take two buses and not cycle at all (which I did for a short time after a crash).

I cannot imagine anyone holding down a normal, 5 day a week job, while also doing 100 km daily. Once or twice a week, though, seems manageable.