Finally got a chance to reach the Mt. Diablo Summit by foot over bike this trip.  Our crew all wished we had bikes upon reaching the summit for the descent.  Nice solid day hike.  The weather was nice and we were glad to have gotten an early morning start as the temperatures were on the fringe of being to warm as we returned.  We followed the Mitchell rock trail to Eagle Peak Trail to Bald Ridge Trail, and finished off with the N. Peak Trail to the Summit and then descent through Mitchell Canyon Rd.  On the journey up was encountered a unique lizard.  Great views from the top!  Clearly a great training hike for the Sierra summer adventures.