Shimla/ Bhopal, June 01 (ANI): Indians ran a marathon on Sunday with a purpose of spreading awareness about preserving our environment and keeping fit in a bid to mark the approaching Environment Day. Falling on June 05, the Environment Day will be celebrated to caution people about the pressing issues such as depletion of ozone layer, global warming and disturbing ecological balance. Meanwhile, Bhopal city of Madhya Pradesh marked the Environment Day with a mini marathon organised by the Nursing Home Association and the city's Pollution Control Board. The participants said awareness on the issue of global warming and conservation of environment was of utmost importance.