Longriders! (2012)

Ami Kurata is a first year college student with no special qualities. One day she happens to notice someone riding a folding bike, immediately falls in love with it, and uses all her savings to buy one. She eventually gets introduced to the world of long-distance bicycling and road racer bikes, and she forms a cycling team called Fortuna with four other female college students from the same school. Their goal is to ride in a "brevet" or long-distance event called "Fresh."

Source: www.anisearch.com/manga/15675

宣伝文句
動全般苦手な倉田亜美(大学１年生)は、駅前で見かけた折りたたみ自転車に一目惚れ。
その勢いのまま貯金を全額おろして、
サイクルショップへ向かうのだが…。
自転車女子の魅力が満載！
ゆるふわ系(？)･自転車漫画♪の新装版！
なんと新装版の表紙は新規描きおろし！
さらに亜美と葵の番外編エピソード16ページが新規に追加収録されています。

Source: www.anisearch.com/manga/15675