You get in formation and head west. You travel for 3 hours (18 turns), resting every 6th turn. The trail just goes west and here and there through thr breaks in the underbrush you can see that you're still parallel to the river to the north.
While you are resting at the end of the third hour (the 18th turn), a group of goblins come into view on the trail ahead of you (still to the west) about 70'. Neither of you are surprised. The goblins get the initiative and charge to within 20'.
Just to be clear, the marching order is Rondo, Si'Nat, Cugel, Patrick, Wilhelm, Bertrem, and Kurik. The trail only allows room for two people to fight side by side in melee, so presumably that's Rondo and Si'Nat. All other will have to fight with ranged weapons or position themselves to take Si'Nat or Rondo's place in case they fall (which right now would be Cugel, although Patrick can move up next to him (but then cannot cast spells).
Your longbow has a range of 210'. From 5-70' (short range) you get a +1 to hit, 71-140' (Medium Range) is normal, and 141-210' (Long Range) is a -1 to hit.