Assuming there are no other leads or things you want to investigate…
You return to Minaryn Castle an hour before sunset, and join the others for last dinner with Dame Messalina. She bids you all well and the blessing of Boccob and Pelor be with you all. With that you all retire for the night early to wake before the sun in the morn.
By candlelight the next morning, you are awoken by servants and make your final preparations for your journey. In the courtyard, your horses have been saddled, and bags pack. The Dame, most of the guards and servants are all up and here to see you off. A few orphaned children wave while they try to rub the sleep from their eyes, torthlight burning bright everywhere. It is a somber occasion as the hero are to head out again into the unknown, to seek out the evil spreading into the High Mark…
Saying their farewells one last time, the heroes ride out over the drawbridge, a dog balking at the first of the large horse that Norbac is riding (the same one lent to you when you were casing the slavers only a few weeks ago, the Dame granted the half-orc holy warrior the noble beast as a small token of thanks).
The first rays of sunlight peek up over the hills to the east, while the group heads towards Harby and finally the River Road. That road runs from just south of Harby all the way to Greyhawk.
Throughout the day the party continues north, making good time. By midday they can see their destination, for the Bright Tower can be seen from over 30 miles on the other side of the bay. In order to make the Tower the party has to continue some miles north to make One Ford to take one of the first ferries across the Selintan River (it is still almost a half a mile across at this point).
That eve, the group stops for the night at Sevant's Cove, a small fishing village of less then 200 people. There is one small inn called the Green Ki-Rin. After dropping off their horses at the stables, the group heads inside, when Lorien, Defrel and Verrick notices some strange green lights flashing in short order to the west of town, out on the bay. Looking a little more closely the lights fade, but they can make out a broken tower on the hill just away from any buildings.
When the group moves into the inn, the keeper, a fat yet jovial man, smiles and greets you "Welcome fair travelers! Welcome to the Green Ki-Rin, the finest in south of Greyhawk. Please will you need food and lodging for the night? Private rooms here are only 5 silver pieces and that includes stew this eve and warm bread and soup in the morn. What say ye good nobles?"