The recent growth in cycling in the United States has paralleled a growth in the diversity of cyclists, but what encourages people to bicycle is not the same across all demographic groups. This study uses intercept survey data from predominately Latino-immigrant neighborhoods to understand how social ecological motivations for cycling differ for immigrants and U.S.-born residents. Both perceptions of cycling and social relationships with cyclists are strong predictors of cycling, and more strongly so for immigrants. Planning that supports both social and physical infrastructure may help meet the needs of diverse cyclists and promote equity.