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Unsteady spatially localized states such as puffs, slugs or spots play animportant role in transition to turbulence. In plane Couette flow, steadyversions of these states are found on two intertwined solution branchesdescribing homoclinic snaking (Schneider $\textit{et al.}$ 2010a). Thesebranches can be used to generate a number of spatially localized initialconditions whose transition can be investigated. From the low Reynolds numberswhere homoclinic snaking is first observed ($Re < 175$) to transitional ones($Re \approx 325$), these spatially localized states traverse various regimeswhere their relaminarisation time and dynamics are affected by the dynamicalstructure of phase space. These regimes are reported and characterised in thispaper for a $4\pi$ periodic domain in the streamwise direction as a function ofthe two remaining variables: the Reynolds number and the width of the localizedpattern. Close to the snaking, localized states are attracted by spatiallylocalized periodic orbits before relaminarising. At larger values of theReynolds number, the flow enters a chaotic transient of variable durationbefore relaminarising. Very long chaotic transients ($t > 10^4$) can beobserved without difficulty for relatively low values of the Reynolds number($Re \approx 250$).

Dynamics of spatially localized states in transitional plane Couette flow