PA28 pilot reported an near midair collision with a glider while enroute.

Attributes
ACN	1636607
Time
Date	201904
Local Time Of Day	1201-1800
Place
Locale Reference	3B3.Airport
State Reference	MA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	VFR
Aircraft 2
Make Model Name	Sail Plane
Operating Under FAR Part	Part 91
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 18 Flight Crew Total 169 Flight Crew Type 166
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 250 Vertical 0

Narrative:

After leaving [my departure airport]; I received ATC flight following [en route to ZZZ]. Everything was fairly normal. I received some minor traffic advisories.just before sterling (3b3); flight service provided a traffic advisory. I can't remember the exact wording but within a second or two I noticed traffic immediately to the right. A glider. I announced traffic in sight. It seemed like the glider made a turn towards me and I took evasive action turning left and descending. I did notice another glider. I can't remember whether the original glider was red and white or yellow. Those were the colors of the gliders.it seemed sort of close but at the time; I don't think I heard anything further from flight service and really couldn't judge the distance. When I was home later that evening; I paced out 500 feet and realized that the glider probably was within 500 feet. Therefore; I am reporting this incident.

Original NASA ASRS Text

Title: PA28 pilot reported an NMAC with a glider while enroute.

Narrative: After leaving [my departure airport]; I received ATC flight following [en route to ZZZ]. Everything was fairly normal. I received some minor traffic advisories.Just before Sterling (3B3); flight service provided a traffic advisory. I can't remember the exact wording but within a second or two I noticed traffic immediately to the right. A glider. I announced traffic in sight. It seemed like the glider made a turn towards me and I took evasive action turning left and descending. I did notice another glider. I can't remember whether the original glider was red and white or yellow. Those were the colors of the gliders.It seemed sort of close but at the time; I don't think I heard anything further from flight service and really couldn't judge the distance. When I was home later that evening; I paced out 500 feet and realized that the glider probably was within 500 feet. Therefore; I am reporting this incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.