To be honest, I don’t know how these work in Pathfinder. However, I’ve used a similar concept in other roleplaying games and found that card-drawn obstacles can make for dynamic and exciting chases.

Paizo’s offering is a deck of GameMastery Chase Cards, 51 cards for $11. One deck includes obstacles for dungeon, forest, and urban environments.

LPJ Design’s Ultimate Chase Decks is so far available in a 34 card print-and-play Forest & Jungle Chases edition.