The thermal decomposition of norbornane (dissolved in benzene) has been studied in a jet-stirred reactor at temperatures between 873 and 973 K, at residence times ranging from 1 to 4 s and at atmospheric pressure, leading to conversions from 0.04 to 22.6%. A total of 25 reaction products were identified and quantified by gas chromatography, among which the main ones are hydrogen, ethylene, and 1,3-cyclopentadiene. A mechanism investigation of the thermal decomposition of the norbornane-benzene binary mixture has been performed. Reactions involved in the mechanism have been reviewed: unimolecular initiations by C-C bond scission of norbornane, the fate of the generated diradicals, the reactions of transfer and propagation of norbornyl radicals, the reactions of benzene, and cross-coupling reactions.