  We construct regular, asymptotically flat black holes of higher order scalar
tensor (DHOST) theories, which are obtained by making use of a generalized
Kerr-Schild solution generating method. The solutions depend on a mass
integration constant, admit a smooth core of chosen regularity, and generically
have an inner and outer event horizon. In particular, below a certain mass
threshold, we find massive, horizonless, particle-like solutions. We scan
through possible observational signatures ranging from weak to strong gravity
and study the thermodynamics of our regular solutions, comparing them, when
possible, to General Relativity black holes and their thermodynamic laws.
