History
From one marathon to a four-race Slam
How Procam International built India's road-running calendar, and where the Slam fits into it.
Procam International is founded
Brothers Anil Singh and Vivek B. Singh set up Procam International in Mumbai to promote sport in India.
The Mumbai Marathon begins
Inspired by a visit to the 2003 London Marathon, the founders launch the Standard Chartered Mumbai International Marathon on 15 February 2004 — India's first major international marathon. Tata became title sponsor in 2018.
Delhi gets its half marathon
The inaugural Delhi Half Marathon is run on 16 October 2005 with a US$310,000 prize purse. Later editions carried Airtel, and then Vedanta, as title sponsor.
The World 10K comes to Bengaluru
The first World 10K Bangalore is held, backed by Sunfeast for its first three editions. TCS later took over as title sponsor and the race is now the TCS World 10K Bengaluru.
Kolkata joins with a 25K
Procam brings a 25K to Kolkata. Nitender Singh Rawat (1:19:39) and Kavita Raut (1:33:39) win the inaugural edition. It went on to become the world's first World Athletics Gold Label 25K.
The Procam Slam is announced
On 20 April 2018 Procam launches the Slam to reward runners who complete all four feature races in one cycle. The first cycle ran TCS World 10K Bengaluru 2018 → Delhi Half Marathon 2018 → Kolkata 25K 2018 → Tata Mumbai Marathon 2019.
Four label races, one challenge
All four events now carry World Athletics labels, and the Slam has run through multiple cycles — with a five-piece commemorative medallion for runners who complete five.
Compiled from public sources in August 2026. Founding dates, inaugural results and sponsorship changes are not authenticated — see the disclaimer.