JB PERFORMANCE COACHING
Run farther. Lift heavier. Train smarter.
Enjoy the Journey.
Whether you're a total beginner or a seasoned athlete, I’ll guide you every step of the way.
Let’s build your strength, endurance, and confidence with training that fits your life. Find the joy in moving, growing, and chasing your goals.
Ultra curious?
Dreaming of running farther than most people want to drive? I’ve run many ultramarathons and know what it takes to train hard, fuel wisely, and stay mentally tough when the miles start to add up. Whether you're eyeing your first 50K or signing up for a 100-mile mountain race, I’ll help you prepare for the challenge and have fun throughout the entire process.
Love to lift?
You don’t have to be a runner to work with me! I offer programming for lifters of all experience levels. Together we can build strength and confidence whether you're stepping into the gym for the first time or looking to break through a plateau.
New to running?
If you are ready to lace up and go out for your first run…you’re in the right place! I specialize in helping beginners build a strong foundation with totally personalized training plans. We’ll focus on consistency, confidence, and fun! Plus mobility and injury prevention so you can begin to enjoy running without any setbacks.
Looking to BQ?
Boston keeps raising the bar...but with the right plan, you can rise to meet it. I’ll help you structure a personalized training cycle, target key workouts, and dial in your race strategy so you can shave seconds (or minutes) off your time and take a confident shot at that elusive BQ.
About me
I’m Jenny Boshco - a lifelong runner, strength enthusiast, and coach who believes training should bring you joy and empowerment. I’ve raced everything from 5Ks to ultramarathons (including the Boston Marathon and Barkley Fall Classic) and discovered that the real magic happens when strength and endurance meet. Today, I bring that mindset to coaching by helping runners and lifters of all levels build consistency and confidence, so they can reach their goals and actually enjoy the process.
The JB Philosophy
Training Should Be Fun
Running and strength training should, first and foremost, bring you joy. Every workout should leave you feeling energized, accomplished, and more connected to your body. That might be a quiet trail run with a beautiful view or a sweaty gym session that leaves you feeling powerful. When training feels good, progress follows.
Train With Purpose
Every workout has a reason behind it. I use the proven VDOT system, grounded in Jack Daniels’ research, to guide training intensity, structure, and progression. Whether you’re running your first mile or chasing a BQ, your plan will be intentional, personalized, and built around your goals.
Strength training is one of the best things you can do for your body whether you run or not. It supports bone health, joint function, injury prevention, and everyday confidence. I also emphasize mobility to help you feel better, move better, and train smarter at any age or experience level.
Strength Is for Everyone
Build for the Long Term
Real, lasting progress takes time. I coach with both short-term milestones and long-term sustainability in mind. Whether you're training for your next race or building lifelong strength, we’ll focus on consistency, recovery, and smart progression so you can move well for years to come.
Dream Big
Want to BQ? Go sub-4? Hit a new squat PR? You’re capable of more than you think. Big goals are exciting and totally within reach with the right plan. I’ll help you stay focused, motivated, and supported through every phase of your training cycle so you’re ready to rise to the challenge.
Progress isn’t always flashy or immediate. But showing up consistently is what builds strength, confidence, and results that stick. My ultramarathon experience taught me that grit, adaptability, and patience matter more than perfection. Whether or not you run ultras, that mindset shapes everything I coach: trust the process, do the work, and stay the course. Results will come.
