Did an experiment. Combine sketch walk with walking 10,000 steps. The start point was Buona Vista MRT Station and the end point was Ikea at Alexandra Rd. My friend and I drew small and quick so we could cover more ground. We would walk for about 10 mins and then draw for 10 mins each time. This was the result. Drawn with a mix of Uni-ball Air rollerball, Blackwing pencil, brush pen and watercolours. We only achieved about 7000 steps. But the rest of it was easily covered just by casually walking around for the rest of the day.