Abstract: A footrest for a bicycle includes a tube having a closed end and an open end, and a sheath removably mounted around the tube and engaged with a rim of the closed end. The closed end has a through-hole defined therein for allowing a wheel axle of the bicycle to extend therethrough. The sheath has a knurled outer periphery and is not rotatable with respect to the tube. A cap is detachably attached to the tube at the open end for retaining the sheath around the tube between the rim of the closed end and the cap. Furthermore, a fastening is adapted to be threadedly connected with the wheel axle to fasten the tube to the bicycle.