Contact & Location

Address
2485 Willow Park Rd, Bethlehem, PA 18020, USA

Opening Hours

Sun
08:45–11:30
Mon
06:00–07:00
Mon
09:00–11:00
Mon
16:30–19:30
Tue
06:00–07:00
Tue
08:30–12:30
Tue
17:00–19:30
Wed
06:00–07:00
Wed
08:30–11:00
Wed
16:30–19:30
Thu
06:00–07:00
Thu
08:30–11:30
Thu
16:45–19:30
Fri
06:00–07:00
Fri
08:15–13:00
Fri
17:15–18:30
Sat
08:00–11:00

About

is a fitness facility located at 2485 Willow Park Rd, Bethlehem, PA 18020, USA.

Location

is located at 2485 Willow Park Rd, Bethlehem, PA 18020, USA.

Opening Hours

DayOpenClose
Sun08:4511:30
Mon06:0007:00
Mon09:0011:00
Mon16:3019:30
Tue06:0007:00
Tue08:3012:30
Tue17:0019:30
Wed06:0007:00
Wed08:3011:00
Wed16:3019:30
Thu06:0007:00
Thu08:3011:30
Thu16:4519:30
Fri06:0007:00
Fri08:1513:00
Fri17:1518:30
Sat08:0011:00

What Our Members Say

5.0
Based on 15 reviews
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+11
Powered by Google Updated Apr 2026
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Kimberly Ujvary
9 years ago

I joined ISFS in January 2015 when a friend suggested we do a weight loss challenge. I didn't realize everything I would get out of this new adventure in my life! ISFS is not just a fitness studio, it is a place for al...

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Sharon Scheirer
4 months ago

I have been a member here for almost 2 years, and I must say this place is the best! No class is ever the same. There is absolutely no judgement. The owner keeps switching things up, offering new classes, special progr...

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Gabriela Powers
3 years ago

Love it here! So many options for classes and so many different times. They have Zumba, yoga, cardio kickboxing, barre, Pilates and so much more I haven’t tried yet. I’ve been going for 6 months now and I’m excited to ha...

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Mandy Webber
3 years ago

I have been going to Inner Strength for years and I LOVE it! I've never been to a fitness studio where everyone is so positive and motivating. Another thing I love is the variety of classes they offer. There is something...

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Sonya Sanchez
a year ago

“The studio offers a wide range of class formats, with highly skilled instructors and an overall positive, energetic atmosphere.”