We took the Amtrak Zephyr route across the West. As usual, seats were comfortable. I had done this once before, but not in the Winter. The route between Salt Lake and Denver winds through some extremely remote canyons with no roads. The canyons are narrow and the scenery is spectacular. My mountain climbing days are behind me and this was the next best thing. I recommend the experience but don't expect gourmet food. We brought our own except for one meal in the dining car and that was about the right proportion for us.

I recently took the Amtrak/Via Rail "Maple Leaf" train all the way from New York City, NY, USA to Toronto, ON, Canada. It took about 13 hours each way. I had taken portions of this route before but never the whole thing. There is only one trip each direction per day. It stops at several points in the US and Canada.

I was pleased with the journey even though I would have preferred the train to run at twice the speed it did. It was a beautiful and scenic ride punctuated by a number of historic cities. The Amtrak personnel on longer-distance routes like this are particularly pleasant, funny, and personable.

• NYC (Penn) to Albany–Rensselaer (~150 miles): about 2.5 hours on paper plus a slightly excessive wait at the Albany station (which is quite nice, through located nowhere near Albany proper). I believe this time is used to change the locomotive. This was the most gorgeous part of the trip by far: the train follows the east side of the Hudson River for the entire stretch and you have a constant view of the Palisades across the water. This is the fastest part of the journey. Going north, you want to be on the left side of the train; going south, the right (but it gets dark early this time of year).
• Albany–Rensselaer to Canadian border (~300 miles): about 6.5 hours on paper. Here, the train turns to meet each of the western cities, including Schenectady, Utica, Rome, Syracuse, Rochester, and Buffalo (twice). This segment isn't as scenic as the Hudson, but it takes you through a lot of farm country, which is nice to look at too. The train's average speed along this route is considerably slower than the southern section. I assume this is because there are more at-grade crossings or some track alignment slowdowns.
• Canadian border to Toronto (Union) (~80 miles): about 2 hours on paper. Not the most aesthetically pleasing section of the route, and dark for me going north. The train runs abysmally slowly in this section both because there are a lot of stops in short intervals and more importantly because there are an absurd number of at-grade crossings throughout the route, plus, I assume, various engineering-based speed restrictions from windy track alignments. But Union Station is a gorgeous building and very easy to navigate. Connections to the UP Express and subway are trivial.

You'll notice that the times I listed don't add up to 13 hours, the full length of the trip (on paper). This was because the train stops for an irritating amount of time at the border, the only part I didn't like, which unnecessarily adds ~2 hours to the trip. What happens is:

1. Amtrak personnel provide you a customs declaration form to fill out about 30 minutes before you arrive at Niagara Falls. Have a pen handy.
2. Train stops at the Niagara Falls, NY (NFL) station for upwards of 45 minutes, nominally so that the border control agents can "get ready" to receive you. Why they did not prepare during the 10+ hours they had all day I could not say. If you're crossing the border, you do not get out here, but wait until the train starts moving again.
3. Train goes to the Niagara Falls, ON (NFS) station in about 5 minutes. Now you disembark with all luggage and walk into the building for security screening. On the Canadian side, they just ask you a couple questions: no complex screening. It took about 15 minutes. Then, for some indecipherable reason, they direct you outside the station and instruct you to walk around and go into the main entrance to wait. (Yes, truly magnificent routing.)
4. You sit in their waiting room for at least 30 minutes with the other passengers. The reason you are waiting is so that they can search the entire train for contraband. When finished, you are ushered back on board. The business class passengers reboard the train (the same train) first, then coach passengers. The rest of the trip is operated by Via Rail. (Note: you don't have to buy anything from Via except maybe if you are starting in Ontario and going to Toronto. Amtrak's ticket covers the whole route from the US and back.)

Going from Canada to the US, the process is basically the same, except that the Americans force you to go through an airport-style bag screening check, which I consider utterly redundant. They also have multiple dogs sniffing you for drugs (I assume). The dogs are cute, but do not touch, for they are deadly creatures hard at work. All the scanning and sniffing and waiting takes at least 45 minutes to an hour. Thankfully you can keep your shoes on. I'm a US citizen with TSA Pre-Check and whatnot, so they don't give me trouble with the security questions, but they have no problem interrogating people for a long time and painstakingly searching multiple bags because the dog thought it smelled a piece of bacon.

It is an incredibly stupid and unnecessary process. Bags are not scanned when driving through the border by car. Dogs do not sniff your belongings and person when driving by car. You do not have to exit your car, take out all your belongings, and sit around in a waiting room for an hour when driving by car. Frankly airport security is faster than this was. It's no wonder this train isn't the preferred method of travel!

Despite the pointless border security, the trip was enjoyable and I will do it again the next time I visit Toronto from New York. It was also cheaper than flying at the time I booked it: ~$134 in coach (minus 10% for my Rail Passengers Association discount! So really $121) vs. ~$185 for a one-way flight (when I was looking). I think if you book far enough in advance, you can get a flight for as little as $90, but you usually have to fly out of LaGuardia or JFK for the cheap tickets, which are the worst airports known to mankind and also are not on the NEC. LGA is particularly hard to access. (I almost always fly out of Newark for these reasons.)

It does take... the entire day, though. So you have to treat it more like an experience than strictly transit. If you have friends in upstate New York, this is a good opportunity to visit for a night or two!