The Concord Council on Aging leads a free, guided 2.5-mile walk Wednesday along the Bruce Freeman Rail Trail to White Pond Reservation, part of its summer "Bob White Walk" series for residents 60 and older.

The group meets at 9 a.m. at the Ellen Garrison Building at Concord Middle School and returns by 10:30 a.m. The route follows the paved rail trail before looping through the 70-acre White Pond Reservation, where pine, oak, hemlock and birch shade trails circling a 40-acre kettle pond. It's rated easy.

White Pond, fed by natural springs and reaching 60 feet at its deepest point, sits in Concord's Nine-Acre Corner area. Henry David Thoreau once called it "perhaps the most attractive, if not the most beautiful of all our lakes, the gem of the woods." The Bruce Freeman Rail Trail runs right along the pond's west side, a 10-foot-wide paved path stretching 20 miles from Lowell to Sudbury along the old New Haven Railroad line — Concord's own 2.5-mile stretch opened in 2019, with a shorter connecting section added in 2023.

The walk is organized through the Harvey Wheeler Community Center in West Concord for residents 60 and older. Call 978-318-3020 to sign up. Past walks in the series have covered Walden Pond's 1.7-mile loop and a 2.2-mile stretch of Battle Road at Minute Man National Historical Park.

The next Bob White Walk is Aug. 19 at 9 a.m., a 2.5-mile route through mostly shady woods on Massport property spanning Concord and Bedford. Meet at the parking area across from 445 Bedford St., just past the Concord/Bedford line. Register by calling the COA at 978-318-3020.