5.5 miles one way to Inspiration Point via Service Road, takes 2 hours 15 minutes. Elevation gain of 2,377’. Continued on to MtWilson road, another 3 miles one way, takes another 1 hr 15 minutes. Total hike Chaney Trailhead to Mt Wilson Road via Inspiration Point thru Mueller tunnel is 17 miles, takes 6 1/2 hours. * I’d like to summit Mt Lowe next time. *