The Arthritis Foundation’s 5K Jingle Bell Run/Walk for Arthritis steps off at Legacy Village in Lyndhurst. More than 1,000 participants and 70 teams are expected. Holiday-themed attire is encouraged and there will be a race-day costume contest. Competitive and non-competitive runners, walkers and children will take part. A Kids’ Snowflake Run will step off at 8 a.m.