This year’s Boston Marathon will have a “no bags” policy as part of stepped-up security following last year’s deadly bombing.

Marathon runners typically are allowed to bring bags or backpacks to keep personal items. Those bags are bused between the starting line in Hopkinton and the finish line in Boston.

But this year, runners will not be allowed to bring backpacks or bags, which will also not be allowed in certain areas near the start or finish line, or along the 26.2-mile course.

Runners will be given a chance to check gear on Boston Common on the morning of the marathon to allow them to have a change of clothing at the end of the race.

The new rules were outlined in an email sent by the athletic association to registered runners by the Boston Athletic Association (BAA).

The BAA said unregistered runners, known as “bandits,” who traditionally jump into the race at various points along the course, will be strictly prohibited this year.

Glass containers and any container larger than one liter will also be banned, said AP.

The list of prohibited items for runners also includes strollers, suitcases and rolling bags, weight vests or any type of vest with pockets, except for lightweight running vests, which will be allowed, AP said.

Props, including sporting equipment, military and fire gear, and signs or flags larger than 11 inches by 17 inches are also prohibited.

The BAA said runners will be allowed to wear small fanny packs to carry food, medicine, identification, cellphones or other necessary small items. They can also bring water bottles, but they must be one liter or smaller, AP said. Organizers are discouraging runners from wearing headphones, but they will be permitted.