I walked along the bumpy stone path in bare feet and it hurt so bad I was in agony.
この場合、次のような言い方ができますよ。
ーI walked along the bumpy stone path in bare feet and it hurt so bad I was in agony.
「でこぼこの石の道を素足で歩いたら、すごく痛くて悶絶した」
to walk in bare feet で「素足で歩く」
to be in agony で「苦しみ悶える・悶絶する」
ご参考まで!