A guidewire (10,100,200,300,400,500,600,700,800,900,1000) includes a core extending from a proximal end to a distal end, and a first coil body (30) that is wound around a distal end portion of the core. In the guidewire, at least a part of the core is formed of a second coil body (40,140,240,340,440,520,620,740,820,940,1020) composed of a plurality of wires (41,143,441,521,623,741,841,943,1023) that are spirally twisted together.
