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Data updated: July 2026

Mark Campbell - TRX βœ“

@trx_core Β· Instagram Β· US Β· fitness

Followers
35K
Following
1.3K
Posts
852

About Mark Campbell - TRX

Mark Campbell, known as TRX, is a fitness trainer and educator based in the United States. With a focus on fitness, gym, and wellness, he shares educational content through various formats including reels, long-form videos, stories, and live-streams. As the owner and founder of Core Strong KC, he also serves as a master trainer for TRX and YBell Fitness. His authoritative and professional tone resonates with an audience seeking instructional and demonstration-based content. Some content may require brand review.

@trx_core's followers & following

35K

@trx_core currently has 34,798 followers on Instagram and follows 1,341 accounts, a follower-to-following ratio of 25.95. That places the account in the micro tier of fitness creators.

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@trx_core's content

852

@trx_core has published 852 posts to date, working across reels, long-form-video, stories, live-streams. The account's content is classified under fitness, gym, wellness. Bio: β€œβ— Owner/Founder @corestrongkc πŸ“KCMO ● @trxtraining & @ybellfitness Master Trainer - TRX15MARK ● @therabody Master Educator ● NSCACPT @trxcl…”

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AI quality check on @trx_core

95/100High authenticity

Zaver's AI analyzed this account across 20+ parameters before listing it publicly. No blocking issues were detected in our standard screening.

  • Audience location & demographics
  • Engagement quality & authenticity
  • Follower growth patterns
  • Signs of purchased followers
  • Content niche classification
  • Brand safety screening
  • Posting activity & consistency
  • Language & audience fit
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@trx_core's rankings on Zaver

19,255thin fitnessof 39,215 vetted creatorsSee full ranking β†’203,642ndin United Statesof 481,629 vetted creatorsSee full ranking β†’

Based on follower count among creators that passed Zaver's indexing quality bar.

@trx_core's audience

Audience snapshot

60% male Β· 40% female

Core age group25-34

The audience skews slightly male at 60%, primarily within the 25-34 age range. The top geographic location for followers is the United States, suggesting a targeted engagement with a young adult demographic interested in fitness and wellness.

Collaboration pricing

Price tierPremium

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Which brands fit Mark Campbell - TRX?

Mark Campbell is well-suited for collaborations with brands in the fitness, gym, and wellness sectors. His educational approach and professional background allow him to effectively promote products and services that align with his expertise and audience interests.

Frequently asked questions

How many Instagram followers does @trx_core have?

As of July 2026, @trx_core has 34,798 followers (35K) on Instagram, follows 1,341 accounts, and has published 852 posts. Zaver refreshes these numbers on a rolling basis.

How do I contact @trx_core?

Verified contact details for @trx_core β€” including business email where available β€” are held in Zaver, alongside contacts for millions of other Instagram creators. Zaver users can unlock them instantly and reach out from your own inbox. Unlock @trx_core's contact info β€” free trial β†’

How much does @trx_core charge for a sponsored post?

@trx_core sits in the premium price tier on Zaver, based on follower scale, engagement and niche. Zaver's AI pricing model also produces a fair per-post price range with justification, so brands can negotiate from data instead of guessing. Get the AI fair-price estimate β†’

What is @trx_core's net worth?

@trx_core's net worth isn't publicly verified, and Zaver doesn't estimate personal wealth. What can be assessed is sponsored-post earning potential: with 35K followers and a premium price tier in fitness, brand collaborations are a meaningful income stream β€” Zaver's AI pricing model estimates what each placement is worth. See the earning-potential estimate β†’

Does @trx_core have fake followers?

Zaver's AI authenticity check scores @trx_core 95/100, based on 20+ signals including engagement quality, follower growth patterns and signs of purchased followers. That indicates a predominantly genuine audience. Run the full authenticity check β†’

Who follows @trx_core?

@trx_core's 35K followers skew 60% male / 40% female, core age group 25-34. Full audience breakdowns β€” age bands, gender split and country-level distribution β€” are part of @trx_core's report on Zaver.

Which influencers are similar to @trx_core?

Zaver lists comparable fitness creators in United States in the "Influencers like @trx_core" section on this page, matched by niche, audience size and engagement. Zaver users can also search all 39,215 vetted fitness creators with plain-English queries.

What is the follower count?

Mark Campbell has a follower count of 34,798.

What is the engagement rate?

The engagement rate data is currently unavailable.

What is the collaboration pricing?

Mark is in the premium price tier for collaborations.

What is the content niche?

His primary niche is fitness, with secondary niches in gym and wellness.