Conflict has traditionally been defined in terms of goal interference (inte
rpersonal conflict) where the physical presence of one individual or group
interferes with the goals of another individual or group. Recent research h
as identified social values differences as an alternative explanation for c
onflict. Social values conflict can occur between users with different beli
efs and values, even if there is no contact between them. This article buil
ds on this conceptual distinction by examining social values and interperso
nal conflict reported by hikers (n = 210), mountain bikers (n = 163), and t
hose who participate in both activities (n = 400). Data for this article we
re obtained from onsite surveys. Respondents evaluated unacceptable behavio
rs associated with hiking and mountain biking. Across all three groups, les
s conflict was reported for hiking than for mountain biking. To the extent
that conflict did exist for hiking, mountain bikers and dual-sport particip
ants were more likely than hikers to report unacceptable behaviors. For eva
luations of mountain biking behavior, hikers were more likely than mountain
bikers to experience conflict, whereas dual-sport participants fell in bet
ween these two extremes. All three groups reported more interpersonal than
social values conflict.