Sweet and high

My dear friend, a cancer survivor, did a "sprint" triathalon yesterday, which means it's shorter than other types: a half mile long swim, a twelve mile bicycle ride, and a six kilometer (3.1 miles) running portion. She said she felt fine enough today to go to the climbing gym for a nice workout, so off we went. We are finding several routes that are supposedly in our range, which we can't get up. We suspect they are put up by young fellers who climb very hard. We refuse to consider any other possibility.