If he didnt catch you in the first few seconds while you gained speed then maybe. Average human running speed is 12-15 mph short term and 5-8 mph long term. A minute is pretty long when running. Even allowing for his being faster than average to start he probably couldnt maintain sprint speed for a full minute. So theres at least a chance you could get away IF he didnt get you in those first ten to twenty seconds because he'd start running much more quickly than you could get the bike moving and up to speed.