It's a journey with staggering numbers. In just ten days, Bobby, Dennis and Raleigh Jenkins have bicycled more than 650 miles from Seattle to Whitefish, Montana and they've still got more than 2,500 miles to go.

"At the end of the day, we're just plum tuckered out," Bobby said on a Skype call Thursday night - after having just cycled 67 miles through mountains.

The brothers are putting themselves through the difficult journey to raise awareness and funds for two charities dear to their hearts: " A Child's Hope," An organization in Haiti working to support and care for families and children and the "Moss Pieratt Foundation," a nonprofit named after Bobby's grandson Moss who died at just three-years-old from unknown causes.

All experts have been able to tell the Jenkins is that Moss' death falls under the classification of Sudden Unexplained Death of a Child, or SUDC. The foundation is working to raise awareness about SUDC and help those who might find themselves in similar situations.

"We're doing this for those two causes," Raleigh said. "That's why we're out here. "

"Our goal is still to raise half a million dollars for those two charities those two causes. That is the why - the why of what gets us up in the morning to do this," Dennis said.

To see photos and video of the Jenkins journey head over to