Boulder-based Twisted Pine Brewing Co. is expanding its distribution to Iowa and three additional markets this year, officials announced this week.

The craft brewer's ales started shipping to Iowa this week, said Justin Tilotta, a Twisted Pine spokesman. With the addition of Iowa, Twisted Pine's brews are in 11 states.

Later this year, Twisted Pine plans to add distribution to North Dakota, northern California and the Chicago region, Tilotta said.

Last year, Pennsylvania, Virginia and North Carolina were added to Twisted Pine's distribution base.