I'm glad I didn't watch this 2009 Slow TV production first. If I had, I might never have tried the much superior "The Telemark Canal" (2012). A fixed camera view out the front of the train is what you get. That's all you get, for 7 hours and 15 minutes. There's no narration, no history, no identification of places or facilities other than names of stations and tunnels. There are no views out the side windows, which would have added variety and better looks at the scenery, though much would have been obscured by flanking tree rows or stone slopes.
Within those limitations, it's an okay production. The scenery is mostly rural or suburban. If you like looking at architecture, topography, and foliage (and I do) this show provides a lot of very brief views of those things. It's interesting to see the onset of snow cover as you traverse the center of the country, and the reversion to fall color as you get closer to Oslo. With the speed of the train and the camera resolution, the little wildlife seen is unidentifiable, and you may be left guessing "cow or horse?" as fields roll by.
It's filmed 100% in real-time. That includes passage through dozens of tunnels, some several miles long, during which time you see essentially nothing. They could have turned the train's lights on for this televised trip, but no, they didn't until nearly dusk, so any detail inside remains a mystery. You only learn what this train might look like by the few passing in the other direction on sidetracks. About half-way through, the camera tilts slightly and stays that way: not much, just enough to throw the horizon off perceptibly if you're paying attention.
We watched it to the end, just to see what's there, in many sessions of 5 to 50 minutes each. This train moves a lot faster than the riverboat in "The Telemark Canal", but the televised production,"Train Ride Bergen to Oslo," moves a lot slower!