If you’ve spent any time on TikTok or Instagram lately, you’ve probably seen her. Maybe it was a workout reel that made you want to hit the gym, or perhaps it was a paparazzi shot of her holding hands with a certain high-profile comedian. Since stepping into the spotlight as the partner of Matt Rife, everyone seems to have the same question: how old is Mariah Morse?
It’s one of those things that sounds simple but gets muddled in the sea of internet rumors. Some sites claim one thing, while social media sleuths dig up another. Honestly, in a world where everyone’s trying to look perpetually twenty-two, the truth is actually pretty refreshing.
The Real Numbers: How Old Is Mariah Morse?
Let’s get straight to the point. Mariah Morse is 26 years old. She was born on July 12, 1999. While she currently spends a lot of her time in the fitness hubs of Los Angeles, she actually hails from the rolling hills of Pennsylvania—specifically Lancaster County. Growing up in a middle-class family far from the Hollywood chaos, she reportedly had a pretty grounded upbringing.
By the time she celebrated her 26th birthday in the summer of 2025, she wasn’t just "the girlfriend" anymore. She had already established herself as a powerhouse in the fitness world. If you’re doing the math for the current year, 2026, she’ll be turning 27 this upcoming July.
It’s kind of wild to think about how much she’s packed into those twenty-six years. From a college student at Misericordia University to a Bikini Overall Winner at the Summer Shredding Championship, she hasn’t exactly been sitting around.
Why Everyone Is Searching for Her Age Right Now
The spike in curiosity isn’t just random. It’s the "Rife Effect." When Matt Rife—the comedian who basically broke the internet with his crowd work—went Instagram official with Mariah in mid-2025, the search volume for her bio went through the roof.
People were curious about the age gap. For the record, Matt Rife was born in October 1995, making him about 30. That’s a roughly four-year age difference. In the celebrity world, that’s basically nothing. It’s a far cry from Rife’s previous high-profile relationship with Kate Beckinsale, where the age gap was over 20 years.
A Timeline of the Public Reveal
- March 2025: TMZ spots them holding hands in Rhode Island. The internet starts whispering.
- May 2025: Mariah shares the first low-key photo of them together on her Instagram.
- July 12, 2025: On her 26th birthday, the relationship gets the "hard launch." Matt posts a tribute to his "lil meatball," confirming what everyone already suspected.
- September 2025: Matt is seen cheering her on as she wins a major bodybuilding title.
More Than Just a Famous Boyfriend
Focusing only on who she's dating misses the mark on who Mariah Morse actually is. She isn’t just some influencer who showed up overnight. She’s a certified personal trainer and a nutrition coach.
If you look at her early social media presence—all the way back to 2019 when she was just a 19-year-old college student—she was already building a following. She was talking about health care management and fitness long before the paparazzi cared about her dinner dates.
She runs a program called "Grow with Mariah." It’s focused on hypertrophy and strength training for women. Unlike a lot of fitness influencers who sell "get thin quick" schemes, Mariah is pretty vocal about the "bulk." She posts about the reality of gaining muscle, the discipline of meal prepping, and the mental toughness required for bodybuilding.
Her Bodybuilding Success
In September 2025, Mariah competed in the Summer Shredding Championship. This wasn't just a "participation trophy" situation. She took home the Bikini Overall Winner trophy.
The photos from that event show a level of conditioning that takes years of 5:00 AM gym sessions to achieve. It’s probably why her age is such a point of interest; people want to know how long it takes to build a physique like that. The answer? About seven years of consistent, documented work.
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Dealing With the "Internet Famous" Pressure
Being 26 and dating one of the most talked-about men in entertainment isn't all red carpets and free swag. It comes with a massive side of public scrutiny. Matt Rife has mentioned in interviews (like with Billboard) that he tries to keep their personal life private because, in his words, "people are absolutely insane."
Mariah seems to handle it by leaning into her own community. She shares a lot about her dog, an Alaskan Malamute named Kona. She posts recipes. She talks about the "2 AM zoomies" and the reality of a long-distance relationship when Matt is on his Stay Golden tour.
Actionable Takeaways: What You Can Learn From Mariah’s Journey
If you’re looking at Mariah Morse and wondering how she "made it," it’s less about the lucky relationship and more about the grind. Here is how you can apply her approach to your own goals:
- Start Early, Stay Consistent: She started her fitness page at 19. It took seven years to become an "overnight" success.
- Specialization Matters: She didn't just post "fitness." She got certified in nutrition and focused on a specific niche (strength training for women).
- Handle Privacy on Your Terms: Despite the fame, she and Matt waited months to confirm their status. You don't owe the internet every detail of your life.
- Use Your Platform for Real Value: Whether she’s 26 or 66, her value comes from the coaching and inspiration she provides to her 200,000+ followers.
To get the most accurate updates on her current projects or training tips, your best bet is following her official Instagram. She’s active there daily, usually posting from the gym or sharing her latest meal prep.
As for the question of how old is Mariah Morse, the mystery is solved. She’s a 1999 baby, a July Leo, and a professional who’s clearly just getting started in her late twenties.