We conducted 59 interviews at six sites across the US to assess the impact of mobile markets that had received Farmers Market Promotion Program (FMPP) grants. We found that while mobile markets can be important outlets for producers and improve access to fresh produce for consumers, they are often costly to operate and dwarfed by the distribution of free produce by mobile food pantries operated by food banks. Several of the sites provide innovative partnerships that enhanced the sustainability of the mobile markets and complemented mobile pantries. The interviews highlight the need for coordinated efforts by non-profits and policy makers in addressing markets for producers, especially beginning or small producers, and access to healthy food by the food insecure.