Alright here we go:
Tralviland was most likely a port town already and will therefore most likely have a lighthouse. If it was built well and on an already elevated place, it could easily be 40m above sea level. The horizon in kilometres is 3.57 times the square root of the height in meters, so we end up with about 22.5km between our lighthouse and the farthest point it can see, with refraction on a cold day, it's even further so let's say 25km. If we assume the lighthouse keeper could just about make out the southern continent Heiana, then we have ourselves a measurable distance for our map.
So the path I lined out from Atvance to Iblea, with a fork around the middle towards Era, would be about 75km long which
could be possible in a day, but would take about 15hrs of non-stop walking at a good pace which seems ill-advised. Since we didn't leave at the crack of dawn and hopefully had a breakfast and stopped for lunch at the fork in the road, our day might've looked like this.
Leave at 8-ish in the morning, walk about 30km until 2pm then stop for lunch. We'd still have 45km left to go which would take nine hours at best, allowing us to be in Iblea at midnight, but wandering the streets at night can be unpleasant, especially for exhausted travellers, so we'd better set up a camp somewhere before getting to town.
A straight line between Atvance and Tarocchi would be about 475km with my estimates.