Running is at the top of popular sports on Long Island. Runners by the hundreds, and sometimes thousands, of all ages and abilities step up to starting lines almost every weekend morning.

NOVEMBER

ST. BRIGID/OUR LADY OF HOPE 5K RUN & WALK

St. Brigid/Our Lady of Hope Regional School, 101 Maple Ave., Westbury, elitefeats.com. 5k run/walk to benefit the students of St. Brigid/Our Lady of Hope School, kids fun run starts at 8:30 a.m. Fee $25, $30 race day; ages 13 and younger: $20, $25 race day; $15 teachers; $5 fun run. Date 9 a.m. Nov. 29.

ROB’S TRAIL RUN EDITION

Stillwell Woods, Syosset, raceawesome.com. Cross-country 5k in memory of Rob Lauterborn, individual and team competition. Registration and pickup at the Center for Developmental Disabilities, 72 South Woods Rd., Woodbury, from 7:30-8:50 a.m. Fee $45, $50 race day; middle and high school: $37, $40 race day. Date 9 a.m. Nov. 30.

DECEMBER

JINGLE BELL 5K RUN/WALK

Hofstra University, USA Building, North Campus, 900 Fulton Ave., Hempstead, 845-494-2784, jbr.org/longisland. Arthritis Foundation’s 5k run/walk on a USATF-certified course. Donations will be accepted. Fee $50 by Oct. 31, $55 after, $60 race day; kids’ fun run: $25 by Oct. 31, $30 after, $35 race day. Date 9 a.m. Dec. 6.

SEAFORD WELLNESS HOT CHOCOLATE RUN/WALK

Seaford High School, 1575 Seamans Neck Rd., Seaford, 516-384-8536, seafordwellness.com/hot-chocolate-run. 5k race, registration begins at 7:30 a.m. Fast and flat. Raffles, prizes, hot chocolate and bagels. Benefits health education and substance abuse awareness. Fee $40-$45 in advance, $50 race day; middle and high school students: $36-$42 in advance, $45 race day. Date 9 a.m. Dec. 6.

CATCH THE SLEIGH 5K

Cedar Creek Park, Parking Field 4, 3340 Merrick Rd., Seaford, elitefeats.com. Benefits the Never Stop Running Foundation, kids dash starts at 9:30 a.m. Fee $30 before Nov. 15, $33 after, $35 race day; free for fun run. Date 10 a.m. Dec. 6.

TOUGH COOKIE 8K TRAIL RACE

Gov. Alfred E. Smith/Sunken Meadow State Park, at north end of Sunken Meadow State Parkway, Kings Park, nrcrun.org. A challenging and hilly course, featuring raffles and holiday cookies, registration begins at 8:30 a.m. Benefits the Long Island Greenbelt Trail Conference. Fee $30. Date 10 a.m. Dec. 7.

A BACKYARD ULTRA

Blydenburgh County Park, Veterans Memorial Hwy., Smithtown, 631-589-5700, sayvillerunning.com. Competitors will consecutively run the distance of 6706 meters (4.167 miles) in less than one hour, event continues until one participant is remaining, benefits the Long Island Greenbelt Trail Conference. Fee $123.76 by Dec. 7, $139.54 after. Date 8 a.m. Dec. 13.

HO HO HO 5K RUN

John F. Kennedy Middle School, 500 Broadway, Bethpage, 516-349-7646, elitefeats.com. 400m kids fun run begins 8:45 a.m., 5k starts at 9:30 a.m., featuring post-race food, hot chocolate and toy drive. Fast paced, flat 5k through the streets of Bethpage. Fee $35, $40 race day; free kids fun run. Date 9:30 a.m. Dec. 13.

JINGLE ALL THE WAY 5K

Cedar Creek Park, 3340 Merrick Rd., Seaford, 516-442-0117, raceawesome.com. 5k begins at 9 a.m. and Run Run Rudolph 1k begins at 8:30 a.m. Adults are welcome to run the 5k with a jogging stroller. Bring a toy for the John Theissen Children’s Foundation Toy Drive. Fee $41-$50, $31-$40 middle and high school students; $57-$65 dog run. Date 9 a.m. Dec. 14.

A BACKYARD ULTRA: THE 1 LAPPER

Blydenburgh County Park, Veterans Memorial Hwy., Smithtown, 631-589-5700, sayvillerunning.com. 6706-meter (4.167-mile) run, benefits the Long Island Greenbelt Trail Conference. Fee $33.74 by Dec. 8, $44.32 after. Date 9:30 a.m. Dec. 14.