Fleetwood Mac [ tickets ], which kicks off a U.S. tour in May, has extended the run into July.

About a half-dozen July dates now grace an itinerary that already features a full contingent of May and June shows. The latest additions include stops in Washington state, Montana, Colorado and Canadian province Alberta.

The group has also flip-flopped two late-June shows; a planned June 26 stop in Concord, CA, is now June 27, and a planned June 27 stop in the Sacramento area is now June 26.

More dates are expected, as the band plans to remain on the road through the summer, according to Warner Bros. Records.

Members of the band's fan club have access to ticket pre-sales for each show, according to the band's official website. The fan-club offering features two different ticket packages: the first includes a ticket in the first 30 rows, priced at face value plus a $10 service charge; the second features tickets in the first five rows, an exclusive T-shirt and VIP laminate, an autographed tour book, a $25 coupon for the band's online store, and a VIP backstage tour that does not include a meet-and-greet with the band, priced at $500.

Additional details are posted at the group's website.

Fleetwood Mac continues to support last April's "Say You Will," which is the band's first studio album since 1986's "Tango in the Night" to feature Stevie Nicks, Lindsey Buckingham, Mick Fleetwood and John McVie. Keyboardist-vocalist Christine McVie has retired from the group.

VH1--which, along with VH1 Classic, is sponsoring the tour--is airing a 90-minute Fleetwood Mac documentary this month that features footage of the band working on "Say You Will." Showtimes are posted at the band's website.