When Barovia was at its largest size under Strahd's reign, normal travel pace (8 hours a day on normal terrain, no penalties) was 24 miles, or 6 hexes/day. Travel with draft horses and wagons was 36 miles, or 9 hexes/day, though this pace was only possible on the Old Svalich Road and up Tsolenka Pass. Travel on riding horses was 48 miles, or 12 hexes/day.
Times listed assumed riding horses with a Vardo along the Old Svalich Road, unless otherwise specified. Slower mounts took roughly 1.5 as much time, foot travel took twice as long.
From Black Carriage Crossroads
1 day to Castle Ravenloft (assuming no invitation/land contraction)
1 day to Durst Windmill
2/3 of a day to Tser Falls Bridge
1 2/3 days to Tser Pool Encampment
3 1/3 days to Village of Barovia (assuming Tser Pool shortcut)
4 days to Gate of Barovia
4 days to Luna River Crossroads (Wagon cannot do Old Bonegrinder Fey Crossing shortcut)
From Luna River Crossroads:
1/3 of a day to Vallaki
1 day to Khazan's Tower (assuming dirt path)
1 1/3 days to Argynvostholt
1 and 1/3s day to Raven River Crossroads
2 days to Berez (mostly by foot; wagon cannot travel further than 2 squares south before encountering difficulties)
4 days to Black Carriage Crossroads (Wagon cannot do Vallaki-Old Bonegrinder shortcut through woods)
From Raven River Crossroads:
1/2 day to Khazan's Tower (assuming dirt path)
1 day to Argynvostholt
1 and 1/3 days to Luna River Crossroads
1 day to Krezk
1 day to Wizard of Wines
Three days to Yester Hill (assuming by foot; wagon cannot travel past Wizard of Wines before encountering difficulties)
3 and 1/3 days to Tsolenka Pass gatehouse
From Tsolenka Pass gatehouse:
3 days to Amber Temple (horses cannot travel far beyond Tsolenka Pass gatehouse, so this timeline assumes travel by foot)
3 and 1/3 days to Raven River Crossroads