A guidewire (1A, 1B, 1C, 1D, 1E, 1F) includes a core wire (2), a coil body (3) that covers the core wire (2), a tip portion (4) that fixes a distal end of the core wire (2) and a distal end of the coil body (3) to each other, and a resin layer (6) formed on an outer peripheral surface of the core wire (2). The resin layer (6) is formed at least on an outer peripheral surface of a distal end portion of the core wire (2) so as to extend toward a proximal end of the core wire (2) from a position separated from the tip portion (4) toward a proximal end of the guidewire.