Here is my .gpx , .kml file and my Suunto moves count data.
As you can see, it took me 4:23:45 for 13.4 miles and 5154' elevation gain.
This route starts and finishes at the South Branch Pond ranger station. I went up South Branch Mtn trail to Black cat mtn and down to the southern end of Upper South Branch Pond where the SB mtn trail ends at the Pogy notch trail. Then I went north on the Pogy Notch trail to catch the Center Ridge trail up to the Traveller via the Peak of Ridges. The trail up high on this loop is hard to find in spots and schwacky in places. There are cairns which are a big help. The blueberries were popping that day and I enjoyed them heartily. Then up and over North Traveller and down the north ridge to the campground and ranger station at the north end of Lower SB pond. Qute a wild and less used part of the park. You will find no crowds on the Traveller. The tall red pines and intermittent views on the way up the Center Ridge Trail were a highlight for me.