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BRR BER Challenge — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Running And Jogging →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
4milehillchallenge.com ↗	78 match 1 shared topics	4 Mile Hill Challenge	United States~ en	running-and-jogging	robotsllmsaihumans	emailphone	none
kauaichallenges.com ↗	77 match 1 shared topics	Hawaii Challenge Runs	United States~ en	running-and-jogging	robotsllmsaihumans	emailphone	none
familiesonchallenge.com ↗	74 match 1 shared topics	YMCA Families On! Challenge	United States~ en	running-and-jogging	robotsllmsaihumans	emailphone	none
3racechallenge.com ↗	73 match 1 shared topics	3 RACE CHALLENGE	en	running-and-jogging	robotsllmsaihumans	emailphone	none
1000milechallenge.org ↗	72 match 1 shared topics	1000 Mile Challenge 2026	en	running-and-jogging Squarespace Squarespace Commerce	robotsllmsaihumans	emailphone	none
cslewis5mile.com ↗	71 match 1 shared topics	CS Lewis 5 Mile Challenge	en	running-and-jogging	robotsllmsaihumans	emailphone	none
4seasonschallenge.com ↗	71 match 1 shared topics	Home \| 4 Seasons Challenge	en	running-and-jogging Wix	robotsllmsaihumans	emailphone	none
500kstepchallenge.com ↗	70 match 1 shared topics	Home - 500k Step Challenge	en	running-and-jogging	robotsllmsaihumans	email phone	none
barakachallenge.org ↗	69 match 1 shared topics	BARAKA CHALLENGE \| Home - Baraka	en	running-and-jogging WordPress WooCommerce	robotsllmsaihumans	emailphone	none
fallequinox5k.com ↗	69 match 1 shared topics	Fall Equniox 5k & Endurance Challenge	en	running-and-jogging WordPress	robotsllmsaihumans	emailphone	none
medalkids.com ↗	68 match 1 shared topics	MedalKids \| MedalMad Challenges	en	running-and-jogging WordPress WooCommerce	robotsllmsaihumans	emailphone	none
renotahoeodyssey.com ↗	68 match 1 shared topics	Reno Tahoe Odyssey \| Challenge Yourself.	en	running-and-jogging WordPress	robotsllmsaihumans	emailphone	none
cupcake5krun.com ↗	66 match 1 shared topics	BDMS Cupcake 5k	United States~ en	running-and-jogging	robotsllmsaihumans	emailphone	none
virtualracinguk.com ↗	66 match 1 shared topics	Virtual Racing UK Virtual Runs Virtual Challenges Fitness Earn Medals	en	running-and-jogging Shopify	robots llmsaihumans	emailphone	none
donutchase5k.com ↗	65 match 1 shared topics	Lakeside Donut Chase 5K & 10K	United States~ en	running-and-jogging	robotsllmsaihumans	emailphone	none
visaliaturkeytrot.com ↗	65 match 1 shared topics	Visalia Emergency Aid Race Against Hunger	United States~ en	running-and-jogging	robotsllmsaihumans	emailphone	none
renototheredwoods.com ↗	65 match 1 shared topics	Reno to the Redwoods	en	running-and-jogging	robotsllmsaihumans	emailphone	none
elesrace5k.org ↗	65 match 1 shared topics	Ele's Race 5K Run/Walk	United States~ en	running-and-jogging	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.