Anyone venturing out to watch competitors in the Boston Marathon on Patriots Day should avoid bringing any backpacks or coolers to the race. Those are among the items the Boston Athletic Association has banned for spectators at this year’s marathon.

The race will be monitored by uniformed and plainclothes police officers and security personnel, the B.A.A said, and as in years past, spectators may be asked to pass through security checkpoints anywhere along the course from Hopkinton to Boston.

Here's a complete list of banned items from the B.A.A.:

■ Weapons, including firearms, knives, and mace


■ Drones

■ Backpacks, handbags, and other over-the-shoulder bags

■ Suitcases or any other kind of rolling bags

■ Packages or other bulky items larger than 12 by 12 by 6 inches

■ Large blankets or sleeping bags

■ Coolers

■ Certain types of containers, including glass, cans, or anything larger than 1 liter

■ Fireworks, explosives, or any kind of flammable liquids

■ Costumes — defined as anything “covering the face or any non-form-fitting, bulky outfits extending beyond the perimeter of the body”

■ Props, including sports equipment, flagpoles, and military gear

Peter Bailey-Wells can be reached at peter.bailey-wells@globe.com. Follow him on Twitter @pbaileywells.