Which Indian marathon event is considered the largest marathon in Asia?

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Accepted Answer

Step-by-step reasoning:

1. Identify the events listed:
   - (1) Kaveri Trail Marathon — a regional trail event, relatively small.
   - (2) Pinkathon — a large women-only run, but not the largest in Asia.
   - (3) Delhi Half Marathon — a major international half-marathon, but it is a half-distance event.
   - (4) Mumbai Marathon — the Tata Mumbai Marathon, a full marathon with mass participation.

2. Compare scale and recognition:
   - The Tata Mumbai Marathon is widely recognized as India’s biggest road race and is commonly described as the largest marathon in Asia in terms of mass participation and international profile.
   - It attracts elite runners and recreational runners numbering typically $>40{,}000$ participants across events, larger than the others listed.

3. Conclusion:
   - Therefore the Mumbai Marathon (option (4)) is the event considered the largest marathon in Asia.

FINAL_ANSWER: d

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