"High-entropy alloys" are an interesting new class of multi-component alloys. Equimolar multi-component alloys (EMAs) CrMnFeCoNi or NiCrCo are representatives of such alloys with single-phase FCC crystal structure. They are believed to be characterized by a low stacking fault energy (SFE). However, as of yet, the SFE in these alloys is not well understood. Using molecular dynamics simulations with realistic EAM potentials, we determine the magnitude of the SFE and analyse the SFE variations from location to location, as well as the temperature dependence of the average SFE and its distribution. We also show variations of the separation between partial dislocations and found that this dissociation distance depends not only on local SFE, but also on the lattice friction stress which is large and variable in these highly-concentrated solutions. Our results shed light on the complex and unconventional behavior of SFE in EMAs.