This longitudinal study of 1,101 multiracial college students from 105 US institutions reveals the dynamic racial designation choices of participants as freshmen and as seniors, as 56% of the sample gave inconsistent responses about their race over time. Logistic regressions predicting a multiracial designation choice as seniors reveal the pre-college and college factors associated with developing or maintaining this choice over the span of college. Experiences such as living on campus, joining a racial or ethnic student organization, taking an ethnic studies course, participating in a racial awareness workshop, and discussing issues of political or personal importance were each significant predictors of the racial identification patterns examined in this study. The results of this study offer evidence of the need to consider longitudinal changes in students' race and the ways in which students' racial identification preferences change between the time they enter and leave college.