Walk down the road alongside the baseball ground and it's at the end of the road
walk past the side of the baseball ground and it's at the end of the road
「横」は英語で「(the) side」といいます。
「野球場の横の道を通って突き当たりにあります。」＝ 「Walk down the road alongside the baseball ground and it's at the end of the road」/ 「walk past the side of the baseball ground and it's at the end of the road」
ボキャブラリー
walk down ＝ （歩いて）通る
road ＝ 道、道路
alongside ＝ 横づけに
baseball ground ＝ 野球場
end of the road ＝ 突き当り
イギリス 
