While an aero bar on your bike (I personally don’t own one actually) can help you reduce wind resistance and save energy when riding long distance, you need to minimize the outer resistance when you run too. I have recently discovered a method to reduce air resistance and help me sustain my pace effectively; I keep my elbows bent 45 degrees and close to my body (almost attached to the side). Keeping my elbows on the side reduce the area of my body contacted with air; therefore, I am able to move forward without fighting against the wind. Guinea-pig the method and let me know the result!