Being a former Road Racer a couple of decades back, I had a Goal of a different kind which I achieved in 2012 - almost 10 years ago now.
The Goal being to go and watch the Spring Classics in person rather than on TV.
So I did it, flew direct from Taipei to Paris with EVA, then by train to Kortrijk in Belgium where it just happened that I was lodged in the same Hotel as the Tinkoff and Katusha Teams.
The idea was to watch the particular race that weekend and go and abuse a Eurail Pass travelling around Germany mainly in the week between.
So I had a few days to get over the jet-lag. I had pre-purchased a couple of local tours to go and watch the Tour of Flanders (the Start in Bruges, and then on the Oude Kwaremont), and Paris Roubaix (in the Arenberg forest, then at the velodrome in Roubaix) which were a week apart (both won by Boonen).
Amstel Gold (which at that time also had the moniker of Tour De Gilbert) was next which I watched pass by the Germany - Belgium - Netherlands tripoint near Aachen and then later at the foot of the Cauberg in Valkenburg (got a train in between as that race goes in all directions) where Gasparotto won - Gilbert won the WC on the same hill later that year.
Next was the mid week La Fleche Wallone which started at Charleroi in Belgium and ended after the third climb of the wall like Mur De Huy in Huy - which I watched from the 200m to go point on the climb - won by Rodriguez.
The last was the Liege-Bastogne-Liege which was won by Iglinsky. I watched this one from the grounds of a small Pub at the village of Mery (I had learned of that through a Cycling News forum post - and met a few others there) which was at the foot of the Roche-aux-Faucons (2nd last climb). There were showers on and off, but they had a big tent in the grounds complete with a huge TV and the beer was good.
That left me with another week which I went and watched a couple of stages of the Tour De Romandie in Switzerland, before returning to Paris and the flight back to Taiwan.
If anyone is contemplating such a trip, its well worth it. I think the single day races are easier to get to as it would be a logistical nightmare to follow a Grand Tour, even for just a week, due to the crowds and the difficulty of finding accommodation (though a Camper Van / RV seems to be one solution).