Allspiritual.com
Useful directory of (mostly American) Christian travel sites.
http://www.allspiritual.com/ChristianTravel.php3

Christian Adventures
Offers backpacking tours, road and mountain biking, rock climbing, rafting, canoeing and other adventures for Christians.
http://www.christianadventures.org/

Christian Camping International
A database of over 1,000 summer and year-round Christian faith-based camps, conference centres and retreat centres in the US.
http://cci.gospelcom.net/ccihome/

Christian-Travelers-Guides.com
Travel guides, links, tours and other information.
http://www.christian-travelers-guides.com/

Dateable.com
A nice selection of useful travel sites with a Christian theme.
http://dateable.com/Travel/Christian/index.shtml

Virgin.net
Share your holiday experiences, ask for travel advice and search for a like-minded travel partner.
http://freespace.virgin.net/asteroid.76/ctravel/