The participants and the organizers expressed the view that events like this would result in more and more people planting trees.
"It is a big message ('Green Run'). Grown-ups as well as kids are warming up for the run. I hope everyone participating will plant at least a tree to make Assam green," said Taibun Nisa, a former international athlete from Assam.
The half-marathon was classified into two categories, one for athletes and other for non-athletes.
For athletes, the participants were to run 21 kilometers, while in the non-athletic category, the distance was seven kilometers.
Deforestation accounts for up to 60 percent green house gases emission in developing countries like India.