. >> reporter: wendy wheeler and thomas page have a lot in common, one isç they both love hiking.her is that each of their spouses zndoesn't. it's why these two friends find themselves on the trail together, eventually on a journey that's led right to our bay area proud. the great thing about a good friend is that knowing all your quirks, they still want to spend time with you. thomas paige, for example, can tell you all about wendy wheeler's obsessive need to highlight and catalog the trails these two long-time hiking buddies have covered together over the years. >> she's like wanting to highlight things during the trail. >> that's your favorite. >> reporter: in wendy's defense if she hadn't kept such good track, the pair might never have realized an ambitious goal was within their reach. >> something that sound like a cool idea. >> reporter: the idea? hike every mile of every trail in every park in the east bay regional park district. more than 1,200 miles in all. that because of spurs, out and backs and dead ends would take the pair more than 3,000 miles of hiking to complete.

thomas page for example can tell you all about wendy wheeler's obsessive need to highlight and catalog the trails these two longtime hiking buddies have covered together over the years. >> she wants to highlight things during the trails and i'm like -- >> in wendy's defense if she hadn't kept such good track, the pair might never have realized a pretty ambitious goal was within their reach. >> something just sounded like a cool idea. >> the idea? hike every mile of every trail in every park in the east bay regional park district. more than 1,200 miles in all. that because of spurs, dead ends, would take the pair more than 3,000 miles of hiking to complete. >> i don't even know if we said it. like, we should just, like, try to do all of them. >> wendy and thomas worked on their goal for more than a decade from the point when this were just one 30 mile away hike from finishing. but two years later, they still haven't. thomas, you see, has been beset by medical issues. blood clots mainly. that have limited what he can tackle. and wendy, though she could have completed this goal ten times

. >> reporter: wendy wheeler and thomas page have a lot inform common. one, they both love hiking.nother, each of their spouses doesn't. it's why these two friends find themselves on the trail so much together. eventually on a journey that's led right to our "bay area proud." the great thing about a good friend is knowing that all of your quirks, they still want to spend time with you thomas page, for example, can tell you all about her obsessive need to highlight and catalog the trail these two long-time hiking buddies have covered together over the years. >> she's wanting to highlight things during the trail. >> that's your favorite. >> reporter: in wendy's defense, though, if she hadn't kept such good track, the pair might never have realized a pretty ambitious goal was within their reach. >> it sounded like a cool idea. >> reporter: the idea, hike every mile of every trail in every park in the east bay regional park district. more than 1200 miles in all. because of spurs and out and backs and deadends would take the pair more than 3,000 miles of hiking to complete. >> we should