Erm...
The 2nd Stage of the TdY starts in Tadcaster in 2017, not Otley. Otley was the 2016 start.
This means that trains to York will also be majorly affected, as well as Leeds, given that Tad is approx. halfway between the two.
Also bear in mind that the Saturday stage is the double-header with the women's race going out around 8 am and the men's in the afternoon. This may affect anyone ECEing it from the Leeds direction, as you may be crossing the route at around the same time - especially if your route involves Pateley Bridge, Lofthouse and Trapping Hill Lane/Jordan's Moss, as you'll find a peleton's worth of fast women up your rear (depends if you like that sort of thing!!)