Flash Fit: Run, Eat, Retreat

Flash Fit: Run, Eat, Retreat

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Dedicated running coach and personal trainer based in Arlington, VA but with clients around the country and world!

Flexibility and accountability with options for both in-person and online coaching, one-on-one and groups.

Photos from Flash Fit: Run, Eat, Retreat's post 05/18/2026

Pippa ran back-to-back 5k’s this weekend, and somewhere along the way achieved that running nirvana of “I CAN actually do this!” Very proud moments, even if she did leave me in the dust at the end of the 2nd race :).

10/09/2025

Fall family running - fun fitness for everyone!

Photos from Flash Fit: Run, Eat, Retreat's post 11/25/2024

Oh yes, the pictures of me + mini-me + horse.

11/25/2024

Pippa’s first official 5k with Girls on the Run. She may have yelled at me a few times during the race 😳 but she is ready to do it again. And some Tank the Superhorse time to wrap the weekend up!

11/16/2024

It’s been a minute since I did a bigger race, but a fun race today in Richmond. 1:46 for the half. Not my fastest time by far, but that’s not what it’s really about, is it? Happy to be able to still do this!

Photos from Flash Fit: Run, Eat, Retreat's post 10/05/2024

Forgot how tough the Ragnar Black Loop is - 33 miles over 24 hours on some pretty technical trails…and 7 miles overnight, stumbling over rocks and roots in the dark. But it was also a whole lot of fun and a great feeling crossing that finish line. Also made it to a fall farm, of course :).

09/11/2024

Great discussion last night with a group of my running clients about the mental challenges of running. It's NOT all fun and games, despite how it looks in the movies :).

Remember, take full advantage of the running community. We are a supportive bunch and we all deal with many of the same mental blocks and hurdles.

You got this!

09/09/2024

Get active this winter - ignore the urge to hibernate! Get out ahead with your fitness routine with personalized, daily workouts assigned by a certified coach (me!) of Flash Fit.

Whether you are a runner, a walker, a biker, a HIIT devotee, or prefer weights, I can help keep you accountable and motivated by working WITH your schedule, not against it.

Ping me for more information!

Kate, Flash Fit
https://www.flashrunningwild.com
https://teamrunrun.com/coach/kate-marden-arlington-running-coach/

Fall Running Program: Track-Based Work 09/03/2024

Onward to the next event! Registration for my track-based work for kids this fall. Mondays from 5:30-6:30pm.

Fall Running Program: Track-Based Work The Fall Running Program: Track-Based Work is on Monday September 16, 2024 to Monday October 28, 2024.

Photos from Flash Fit: Run, Eat, Retreat's post 08/26/2024

Thanks to everyone who came out for the 5k for Lewy Body Dementia Association! We raised some money, ran some races, and had some fun. Everyone who supported this effort by running, volunteering, donating, etc. - your support means more than I can adequately express.

5k for Lewy Body 2025?

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Arlington, VA