Race sequence

Start anywhere — then don't miss one

Your cycle can begin at any of the four events. Whichever one you start with, you must then complete the next three as they come, in calendar order, with no gaps.

Start at Kolkata

TSW25K → TMM → TCSW10K → VDHM

Start at Mumbai

TMM → TCSW10K → VDHM → TSW25K

Start at Bengaluru

TCSW10K → VDHM → TSW25K → TMM

Start at Delhi

VDHM → TSW25K → TMM → TCSW10K

Starting a Slam right now

With the Delhi Half Marathon feature race reported full for 2026, the realistic entry point for a fresh cycle is Tata Steel World 25K Kolkata on 20 December 2026 — registration is open. Your cycle would then run Kolkata (Dec 2026) → Mumbai (Jan 2027) → Bengaluru (Apr 2027) → Delhi (Oct 2027), finishing in about ten months.

The calendar order

The four races fall in a fixed annual order: Delhi in October, Kolkata in December, Mumbai in January and Bengaluru in April. A cycle is simply four consecutive races along that loop, wherever you join it.

That means the distance profile you face depends on where you start. Beginning at Kolkata gives you 25K → 42.195K → 10K → 21.1K — the marathon lands second, barely four weeks after the 25K.