Seems like around here senior discounts start at 62. I just hit that mark this year and the only cycling related discount I can think of is I can now get the US National Parks lifetime pass for $90. In 2017 my wife and I went to Yellowstone and Glacier and did hiking and biking - the pass was actually cheaper then but we didn't qualify. Occasional bike around here (DC area) on Skyline Drive in Shenandoah National Park, about the only place to use it locally biking!