Topical Authority
Topical authority is Google's assessment of how comprehensively and credibly your website covers a specific subject area. A site that has published thorough, well-structured content across all aspects of a topic, not just a handful of popular articles, signals to Google that it is a reliable source on that subject. As a result, it has a higher topical authority and tends to rank more consistently than a site with isolated high-performing pages.
Why this matters for fitness businesses
For most fitness businesses, topical authority can mean the difference between ranking reliably and ranking every once in a while.
A longevity clinic that has published thorough, interlinked content across NAD+ therapy, cellular ageing, biomarker testing, and IV nutrient protocols has a good chance to outrank a clinic that has written one well-optimised page on NAD+ therapy and nothing else, even if that single page is technically stronger.
For companies in the health and wellness space, topical authority carries an additional complication: the temptation to build authority across fitness methodology topics (training, nutrition, recovery) rather than the business operations topics where the platform genuinely has expertise.
So instead of writing about how your app helps training, you write about the foundations of training. It almost makes sense, but trying to build topical authority in areas where your site lacks credible authorship can expose your site to core update volatility.
It should also be mentioned that topical authority works alongside E-E-A-T but is quite different. Topical authority is about breadth and depth of coverage, while E-E-A-T is about the credibility of the people behind that coverage.
A simple example
Consider two gym management software companies both targeting the keyword "how to reduce client churn in personal training." Company A has published one article on this topic. Company B has built a cluster: a core guide on client retention, linked articles on session frequency benchmarks, rebooking rate optimisation, check-in automation, and a data piece on why clients drop off in months two and three. Both companies have a similar domain age and backlink profile.
After a core update, Company B will likely hold its rankings, even if it experiences volatility. Company A will fluctuate more severely. The content cluster signals to Google that Company B has genuine, comprehensive expertise on fitness business retention, not just one optimised article on a popular query.
What good looks like, and a common mistake
Here are the core pillars of strong topical authority:
- A clearly defined subject area
- Comprehensive coverage of that area's subtopics
- Consistent internal linking between related pieces
- Named authors or contributors with relevant credentials attached to the content
A common mistake is confusing topical authority with publishing volume. A site that publishes 200 loosely connected blog posts covering every trending fitness keyword is not building topical authority but accumulating a library of thin content that may actively dilute the site's quality signals. Publishing fewer, more interlinked pieces on a tighter subject area builds authority faster than volume alone.
How to talk to your agency about this
If your agency is pitching a content strategy, topical authority should be central to how they explain the plan. They may not explicitly state this, but it's likely a big part of it.
Ask them how all the content connects: the pillar content, the supporting subtopics, and how the pieces link together.
"What subject matter are we trying to own? And how do these pieces of content contribute to that topical authority? How much content do you think we'll need, and what results can we reasonably expect in the long term?"