Recreation on public lands is growing and is increasingly recognized as an ecosystem service providing improved health, connection to nature, and social time while also disturbing and degrading ecosystems. Human impacts must be managed, but often managers have little information about the factors that affect recreation patterns. We combined data from global positioning system receivers to record off-road vehicle (ORV) travel with a pretrip survey to determine how group characteristics, site experience, site knowledge, and motivation are associated with ORV trip patterns on public lands in southwest Idaho. Spatial and temporal extent and distribution could summarize most variation in ORV trips. Both trip distribution and extent were associated with group characteristics and site knowledge. Spatial and temporal extent was additionally associated with motivations and distribution was associated with riding experience. These findings can help land managers to identify use patterns, direct informational programs, and effect indirect management strategies.