Ga. 400 in the Roswell area will be partially closed for 30 minutes Sunday morning for the One Hundred Mile Hospitality Highway Ride, an annual charity fundraising event that offers an expected 1,900 participants a rare opportunity to ride on the expressway.

All southbound lanes of Ga. 400 will be closed from 7 to 7:30 a.m. between Holcomb Bridge Road in Roswell and Northridge Road in Sandy Springs, according to the Georgia Department of Transportation. Motorists will be detoured west on Holcomb Bridge (Ga. 140), south on Atlanta Street (Ga. 9), and east on Northridge back to the expressway.

Hosts of the 11th annual edition of the Hospitality Highway Ride are the Roswell Department of Transportation with the help of Bike Roswell and the Junior Flyers Cycling Team. Cyclists will have a choice of 9, 27, 45, 60 and 100-mile routes. Proceeds benefit Emory Heart Center. To donate: https://www.pledgereg.com/ga400-ride

Riders must be at least 12 years old. Information: http://ga400century.com

Online registration ended Wednesday. Early packet pickup registration costs $65 and is available at Roswell Bicycles, 670 Houze Way, 5-7:30 p.m. Thursday; 4-7 p.m. Friday; and noon-4 p.m. Saturday. Day of event registration is $70 ($40 for juniors) and opens at 5:30 a.m.