There are a couple routes. First Rhest.
- Up the Rhestwash: 50 miles to Lake Rhest, 80 miles to the old city. You could commandeer one of the real boats from Drellin's Ferry and travel about 12 miles per day. Between 10-12 days.
- East to the Rhest Trail: 80 miles to the city of Talar, then 80 miles north to the Blackfens. Speed depends on mounts.
- Cross Country: Straight line. Includes crossing a river. Rougly 60 miles to the southern tip of the Blackfens, then another 30 miles to the city.
The Thornwaste.
- Overland travel of roughly 60 miles will get you to the edge of the Thornwaste. Then it would be a matter of finding whatever it is you're looking for.
And this might be somewhat relevant.
Timeline
Day 1, Arrived in Drellin's Ferry.
Day 2, Met Jorr
Day 3, Vraath Keep
Day 4, Vraath Keep
Day 5, Bridge
Day 6, Trolls
Day 7, Arrived back in Drellin's Ferry
Day 8, Evacuation
Day 9, Evacuation
Day 10, Evacuation, Group Departure from Drellin's Ferry