A runner or someone who participates in running events.

A person who represents or acts on behalf of a team or organization, often in speed-related contexts.

दौड़ने वाला

English Usage: The renner finished the marathon in record time.

Hindi Usage: renner ने रिकॉर्ड समय में मैराथन पूरी की।

In informal contexts, it can refer to someone who is always in a hurry or moving quickly.

फुर्तीला

English Usage: He's such a renner; he always rushes to finish his tasks.

Hindi Usage: वह बहुत ही renner है; वह हमेशा अपने कार्यों को खत्म करने के लिए जल्दी करता है।