When I wanted to crank up my cardio routine to lose more body fat or to get into better shape in years past, I would add two or three days per week of running to my kettlebells.

For me, it DID work well to burn more calories and cut weight faster.

Problem is, as time has gone by, running has been increasingly unfriendly on my body. The aches and pains and injuries I would get from higher volume / frequency runs forced me to take a different approach. 

RUCKING is something that's worked for me as a lower-impact alternative, and if you're looking to crank up your cardio and/or shed more body fat, I recommend you try it too!

Rucking is simply walking with around 15-25% of your bodyweight in a backpack, weight vest, etc.

Rucking burns more calories than walking, and only a little less than running. It's also easier on your body, so you can improve your endurance while avoiding injury. It will help you become more strong and durable as well!

You can use pretty much any sturdy backpack or weight vest, and load it up with weight of any kind. (Make sure it's secure and won't shift around.) If you have a sturdy backpack you think will work, you're all set! If you are 
looking to purchase one, check out the EVATEC Tactical Backpack linked below first - it's solid quality (I use it personally!), and for a limited time it's FREE (you just pay shipping):

-> EVATEC Tactical Backpack - FREE (you pay shipping)

To sum up, if you're looking for a highly effective cardio option but hate to run, give rucking a try! It's a great addition to your kettlebell workouts that's challenging and fun at the same time.

To your success! -

- Forest Vance
Master of Science, Human Movement
Kettlebell Expert
Over 40 Training Specialist
KettlebellBasics.net

PS - If you need a backpack to do your rucking with, check out the EVATEC Tactical Backpack here (free + shipping offer).