在英文中，"我仍旧坚持跑步"可以表达为"I still persist in running"或"I still stick to running"。

"Persist"是一个动词，意思是坚持、执着地做某事，而"stick to"也是一个动词，意思是坚持、坚定地做某事。

例句：

"Despite the rain, I still persist in going for my morning run."（尽管下雨了，我还是坚持早上跑步。）
"I know it's hard, but if you stick to your training plan, you'll see results."（我知道这很难，但如果你坚持训练计划，你会看到结果的。）

希望这些信息能帮到你！