Sizzlin' SummerCise Challenge & Kids TRYathlon

presented by Comcast NBCUniversal  and Vertex


May 31 - June 20, 2021

benefiting Miles for CF
Run or Walk 65 Miles

Sizzlin' SummerCise Challenge - Run/Walk

$45 Registration ends May 30, 2021 at 11:59pm EDT
Total 30 Minutes of Outdoor Exercise 5 Days each Week

Sizzlin' SummerCise Challenge - Recreation

$45 Registration ends May 30, 2021 at 11:59pm EDT
Total 60 minutes of outdoor activity each day (Ages 6 and Up)

Sizzlin' SummerCise Kids TRYathlon

$25 Registration ends May 30, 2021 at 11:59pm EDT
SummerCise [suhm-er-size] 
An outdoor physical activity (competitive or recreational) most commonly engaged in between Memorial Day and Labor Day.


The Sizzlin' SummerCise Challenge & Kids TRYathlon is a unique virtual event experience for the entire family.


Whether outdoor exercise is already a regular part of your life, you're ready to start a new exercise routine, or you're looking for a fun activity for the kids, this event is for you!

Join your fellow SummerCisers on a virtual journey from the backyard to the beach!  Along the way enjoy games, compete for prizes, and collect your vacation supplies.


Reach your Personal Activity Goal to enjoy a Virtual Beach Vacation!

Sizzlin' SummerCise Challenge

Choose A Division

Run/Walk - engage in some friendly competition with fellow runners and walkers. SummerCisers in this event are challenged to log 65 miles or more.  Individuals and Teams (3-6 members) are welcome.


Recreational - participants in this division are challenged to log a minimum of 30 minutes of moderate outdoor activity 5 days each week.  Any activity counts.  Mow the lawn, play tennis, walk, ride a bike.  Individuals and Teams (3-6 members) are welcome.

Sizzlin' SummerCise Kids TRYathlon

Ages 6 and up are challenged to be active a total of 60 minutes every day. 


Choose from any or all of these categories:


Outdoor Play - no pre-planning or organization necessary here.  Any active outdoor play time counts.

Organized Activities - structured, pre-planned activities.  Team sports (games or practice), lessons or classes, or organized events.

TRY Something New - Any outdoor play or organized activity counts as long as it's something new and different.


Included With Registration

  • Soft cotton/poly blend shirt (available in Men's,  Women's, and Youth Sizes)
  • Custom Medal for all participants
  • Free entry into weekly contests with a chance to win prizes
  • Free shipping for shirts and medals
  • Exclusive pricing and pre-sale access to registration for the 2021 Big Peach Sizzler (in-person and virtual event options).
  • Personalized Finisher Certificate
  • Printable Activity Tracker (Kids TRYathlon)
  • Virtual Beach Vacation for all finishers

Registration Savings & Special Offers

  1. Family Pack - families of 3 members or more save $5 on each registration when all members register during the same transaction.
  2. Referral Rewards Program - invite 5 friends to register to earn a $20 rebate.  Just share your unique URL (found in your confirmation e-mail) with friends and family.  
  3. Kids Helping Kids Fundraiser - Kids raising $65 to help support kids living with CF participate in the Kids TRYathlon for only $5.  (Instructions for setting up a qualifying online fundraiser are included in the registration confirmation email.)

M4CF BreatheStrong Program
5 Year Celebration

About Miles for CF

Cystic fibrosis (CF) is an inherited, life-shortening disease that turns simply breathing into a struggle.  There is no cure.
People living with CF battle many serious symptoms, including difficulty with breathing and digesting food.


A lifelong regimen of medications, breathing treatments, nutritional supplements, and exercise improve quality of life, but for many create financial hardship.


At M4CF, we support individuals and families living with CF in a variety of ways. Our BreatheStrong Program  promotes regular exercise.   Our Critical Needs Initiative provides financial support to CF Families facing food insecurity. 



We use cookies to offer you a better browsing experience. Read how we use cookies and how you can control them by visiting our Privacy Policy. If you continue to use this site, you consent to use all cookies.