(CNN) - Potential 2012 GOP presidential candidates are off on various travels this week, culminating with the Conservative Political Action Conference.
Former Minnesota Gov. Tim Pawlenty will make three stops in Iowa on Monday as part of the Presidential Lecture series, sponsored by the social conservative group Family Leader. He will speak at campuses in Pella, Iowa City and Sioux City.
Former House Speaker Newt Gingrich will sign copies of his book "Valley Forge" at the Reagan Presidential Library in Simi Valley, California, Monday following Sunday's celebration in honor of what would have been the former president's 100th birthday.
Mississippi Gov. Haley Barbour is on a trip to Israel this week sponsored by the Republican Jewish Coalition. He will meet with Israeli Prime Minister Benjamin Netanyahu and deliver a policy speech Wednesday at the closing of the Herzliya Conference. Barbour is increasingly likely to embark on a campaign for the GOP presidential nomination. An adviser told CNN Friday that he's "running until he's not."
The week ends with CPAC in Washington Thursday through Saturday.
Minnesota Rep. Michele Bachmann, former Pennsylvania Sen. Rick Santorum and Gingrich will speak on Thursday.
Former Massachusetts Gov. Mitt Romney, South Dakota Sen. John Thune, former Godfather's Pizza CEO Herman Cain, Texas Rep. Ron Paul, Indiana Gov. Mitch Daniels and Tim Pawlenty will speak on Friday.
Former U.N. Ambassador John Bolton and Haley Barbour will speak Saturday.
Santorum will return to New Hampshire on Saturday.
- CNN's Peter Hamby and Steve Brusk contributed to this report