The past participle of the verb ‘run’ is ‘run’.
In English, the verb ‘run’ is an irregular verb, which means it doesn’t follow the standard rules for forming past participles. While many verbs simply add ‘ed’ to their base form to create the past participle, ‘run’ changes in a unique way. The base form is ‘run’, the simple past is ‘ran’, and the past participle remains ‘run’.
This can sometimes be confusing for learners of English, but it’s important to remember that irregular verbs often have their own rules. In sentences, you might see the past participle used in perfect tenses, such as, ‘She has run a marathon.’ Here, ‘has run’ indicates that the action has been completed in the past but still has relevance to the present.