Travel Distance Figuring

Travel distances in points:

Tipa => Marr's Pass: 6 points, 1 stream

Tipa => Port Tipa => Marr's Pass: 4 points, 1 river

Tipa => Kilanda: 3 points, 1 ocean

Tipa => Lynari Desert: 4 points, 2 ocean

Marr's Pass => Alfitaria: 4 points, 1 stream

Marr's Pass => Shella: 7 points, 2 streams

Marr's Pass => Fum: 3 points, 1 river

Marr's Pass => Rebena Te Ra: 7 points, 1 river, 1 stream

West Bank => Rebena Te Ra: 6 points, 1 stream

Alfitaria => Shella: 5 points, 1 stream *

Tipa => Shella: 13 points, 3 streams *

Tipa => Port Tipa => Marr's Pass => Shella: 11 points, 1 river, 2 streams *

Tipa => Fum: 5 points, 1 river

Tipa => Marr's Pass => Rebena Te Ra: 11 points, 2 river, 1 stream

Tipa => West Bank => Rebena Te Ra: 9 points, 1 river, 1 stream

Rebena Te Ra => Fum: 6 points, 1 stream

Rebena Te Ra => Shella: 13 points, 1 river, 3 streams

Tipa => Rebena Te Ra => Lynari Desert => Shella: 25 points, 4 ocean, 3 river, 4 streams

Above route + Shella => Tipa: 36 points, 4 ocean, 4 river, 6 streams

Longest Caravan Route
The farthest I could think of without revisiting regions more than necessary:

Starting in Tipa, and going the fastest possible route to Rebena Te Ra, then Lynari Desert, then Veo Lu Sluice, then back to Tipa, collecting 3 drops of Myrrh:

Traverse 36 roads between forks or locations

Cross lengths of ocean 4 times

Pass through the Jegon River 4 times

Pass through 6 miasma streams

Complete 3 dungeons

36 + 4 + 4 + 6 + 3 = 53 units of time spent

53 days is roughly 1 month 23 days

106 days is roughly 3.5 months.

If roads are two days each, oceans are three days each, and everything else is one day:

36 roads = 72 days 4 oceans = 12 days 4 rivers = 4 6 streams = 6 3 dungeons = 3

Then this journey, without spending any extra days in town, would cost 97 days, or 3 months and 1 week. This world is hilariously small.