Creative gamers have created a couple of very useful templates that are pretty much ready-to-go once you've copied it over to your Google account (to use these, or at least administer them, one will need a Google account).
This first one seems more widely used based on it's frequency in relevant searches. The link to this template is here - https://sites.google.com/site/pathfindertemplate/
The second one is less attractive, but many of the designs and features seem more practical. Credited to the team that is behind the PFSRD, this template is here - https://sites.google.com/site/mypfcampaign/
Both draw heavily from the PFSRD site (which is also powered by Google Sites). With only a little work, either one of these can be completely customized for your own campaign.