Private use of the KidStrong center during your party
Birthday parties that rock.
Kids' Birthday Parties in Fairfax, VA
A private, coach-led KidStrong party filled with action, confidence-building games, and unforgettable birthday memories.
KidStrong Fairfax
Birthday parties are hosted at KidStrong Fairfax, 9540 Main St #8 in Fairfax, VA. Call us at +1 571-354-7709 to check party dates and availability.
9540 Main St #8Fairfax, VAWhy Fairfax, VA families love us
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YAS S.
"We absolutely love KidStrong Fairfax! I’ve been taking my daughter for a couple of months now, and I can genuinely see such a positive difference in her. She is becoming stronger, more confident, and more willing to challenge herself, and the best part is that she has so much fun doing it. She looks forward to her classes..."
September 29, 2026
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HANI A.
"Our son really enjoys coming to KidStrong, and we’ve had a wonderful experience, especially with Coach Mandy. She has been fantastic in helping him develop new skills, build confidence, and make steady progress. We’ve also found that having consistency with the coaches is especially valuable, as it helps children build ..."
September 12, 2026
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RACHAEL K.
"We had such a great experience at KidStrong Fairfax! We had already booked our son’s 5th birthday party there, and then went for a trial class last week. After seeing the coaches and programming in action, we were even more excited for his party! Tre, Dillan, and Kayla were awesome with the kids. They kept everyone engag..."
September 7, 2026
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COLIN V.
"Remarkably organized, encouraging, flexible, and professional. A breath of fresh air after coming in from another fitness facility. My 4- and 6-year-olds loved the classes, and we forward to continuing this fall."
September 2, 2026
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ALLISON H.
"Kid Strong is EXACTLY what my son needed! He’s an anxious little guy, who struggles with coordination and doing things he finds challenging. Before we signed up, I chatted with staff and explained my son was anxious and had some sensory sensitivities. They were very receptive and accommodating - even offering to turn the ..."
August 5, 2026
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VESELIN C.
"It’s excellent for children’s physical development, socialization, and burning off energy. The kids absolutely love it!"
July 23, 2026
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JULIE K.
"The coaches create a positive, encouraging environment and never put high-pressure demands on the kids. If a child skips an activity or completes something out of sequence, they don't single them out or criticize. The 45-minute sessions are high-energy, engaging, and so much fun that they go by quickly. It’s a great balan..."
July 1, 2026
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ROBERT H.
"Family oriented environment. Patient with the kids and keep the interactive challenges fresh."
June 14, 2026
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ERIC C.
"The kids have so much fun and let out so much energy. Enjoy seeing how excited they were to meet new people!"
June 13, 2026
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DR S.
"My son had a great time. It took him a minute to warm up but once he did he had a blast. The rest of the day he was far more confident in trying “difficult” tasks"
June 7, 2026
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LINDSEY K.
"Classes are a great length and provide variety; my little guy is always excited to be there! Coaches are great at providing instructions and encouraging participation in a positive way. Coach Ollie is the best!"
April 10, 2026
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DR B.
"I love Alex and all the coaches! Alex worked with my Autistic Son and make us sign up for the program! She is unbelievable! We wouldn’t ask for a better coach. Thanks Alex."
April 9, 2026
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SUNNY S.
"We just hosted our 5 year old’s birthday party at KidStrong Fairfax, and it truly exceeded our expectations. From start to finish, the entire experience was smooth, organized, and so much fun for the kids. A huge shoutout to Coaches Ezra and Bella, who went above and beyond to make the party a success. They helped us wit..."
March 21, 2026
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SANDRA C.
"We had a great first experience at KidStrong. Coach Kelly and the other coaches were fantastic, very patient, encouraging, and great with the kids. The class is well organized and helps build strength, confidence, and focus in a fun way. My son can get distracted sometimes, but they gently brought him back into the group ..."
March 14, 2026
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REBEKAH P.
"My son loves Kidstrong Fairfax! He loves to come every week. The coaches are high energy and very motivating. Five stars!"
March 7, 2026
What you get
Everything needed for an epic party.
We handle the movement, games, coaching, setup, and cleanup so families can focus on celebrating.
Book a Birthday Party90-minute private party
Up to 15 kids included
Two KidStrong coaches
One KidStrong T-shirt for birthday child
Food and cake celebration time included
Set-up and clean-up included
90
minute private party
15
kids included
2
KidStrong coaches
Guided fun
70 minutes of guided activities
A KidStrong birthday party is non-stop action, packed with KidStrong-exclusive games and activities guaranteed to create epic memories, with the last 20 minutes dedicated to food and cake.
Book a Birthday PartyPrivate event
The whole facility is yours
Want your kid to be the VIP? We’ve got you covered. With KidStrong Parties, the entire facility is dedicated to your kid’s special day.
Book a Birthday PartyCoach-led
Two amazing coaches
You get not one, but TWO of our KidStrong-certified coaches for the entire duration of your party.
Book a Birthday PartyMake it yours
Party add-ons at KidStrong Fairfax.
Add-ons available at KidStrong Fairfax. Call+1 571-354-7709 to discuss options that can make the day even easier.
Additional Kids
Additional Party Time
KidStrong T-Shirts for Guests
Goody Bags
Additional Coach Support
Food & Beverage Packages (where available)
Paper Products & Party Supplies (where available)
Ready to celebrate?
Book a KidStrong birthday party today.
Private facility. Expert coaches. Epic memories. Let’s make this birthday strong.
Questions Parents Ask
Frequently Asked Questions
Everything you need to know about KidStrong birthday parties.
How many kids can attend the birthday party?
Each party includes up to 15 kids. Additional kids may be added for an additional fee. Call KidStrong Fairfax at +1 571-354-7709 to check availability and pricing.
How old does my kid need to be to book a party?
KidStrong offers birthday parties for kids aged 1-11. Guests 3 years and younger must have an adult (18 or older) on the floor with them.
What time can I arrive?
Check with KidStrong Fairfax at +1 571-354-7709 on arrival time.
What am I allowed to bring to the party? What do I need to bring?
Families are welcome to bring food, beverages, cake, decorations, and other celebration items. Contact KidStrong Fairfax for any location-specific guidelines.
Is gratuity included or should I tip the coaches?
For details on gratuities or any applicable service fees associated with your party, contact KidStrong Fairfax at +1 571-354-7709.
Does the party host’s child count as a part of the total child count?
Yes, any kid that is on the floor counts towards the party count.
Are waivers required for participation?
Any participant on the floor, 18 and under, must have a signed waiver. When you book your party, we will give you a link where you and your guests can sign the waiver ahead of time.
Do parents need to stay at the party?
If the kids are under 3, a parent needs to be on the floor, for kids older than that, please check with the center on parent policy.
How is my party run? What is the schedule of the party?
Our coaches will check in all guests and ensure that a waiver has been completed. Once checked in, kids can join the coach on the blue floor for explore time. When the majority of the guests arrive (typically 5 minutes after party start time), or when the party parent is ready to begin, the coaches will begin the games on the blue floor. Blue floor games and activities will take about 70 minutes and the remaining party time will be for food/cake.
How far in advance should I book my party?
To ensure you get the date and time of your party, we recommend at least 1 month in advance.
What is the deposit amount?
Check with KidStrong Fairfax at +1 571-354-7709 for party deposit prices. Deposits are applied to your remaining balance at the end of your party. You can book your party online at any time.
Can I pay my party balance prior to the day of the party?
Yes, you can pay for the party balance ahead of time by contacting KidStrong Fairfax at +1 571-354-7709. Keep in mind, a final headcount will take place the day of the party and additional kids will be charged the day of the party.
What is the cancellation policy?
All party deposits are NON-REFUNDABLE. Check with KidStrong Fairfax at +1 571-354-7709 for the full cancellation policy.
Do I have to sign a party agreement?
Yes. All parties require a signed party agreement before the reservation can be confirmed.
Where can I get the waivers?
The link to our waiver form is always easily available on our website. You will also receive a link to share with your guests in your part confirmation email. It is recommended that your guests complete the waiver prior to arrival.
Do I have to be a KidStrong member to host a KidStrong party?
No. Non-members are welcome to host parties at KidStrong. Check with KidStrong Fairfax on the perks of becoming a member.
Do you offer any add-on packages?
After booking your party, KidStrong Fairfax will get in touch with you about the optional add-ons available for parties.
What Add-ons are available for a KidStrong Party?
Call KidStrong Fairfax at +1 571-354-7709 for available add-ons and pricing.