Heart rate training can be very useful for runners hoping to train more effectively by helping us to avoid those dreaded junk miles. Heart rate monitors can be purchased as chest straps and some GPS watches now even have built-in optical sensors on the wrist.

Since I’ve been training with heart-rate for quite a few years myself, and as an ambassador for Suunto, I often get asked about training with heart-rate. I’ve also realized in talking with people that there’s quite a bit of confusion on how heart rate can and can’t be used.

Here are 5 common mistakes that runners make when training with heart rate.

2015 was my third full season on the trails and was by far my biggest. After running my first 100 miler in 2014, I wanted to raise the bar again by going a little faster and a little further, while taking care of some unfinished business and revisiting one of my first races, and testing my limits at a new style of racing.

This season wasn’t all about racing though, as I had an amazing summer of training that included a week in Colorado to pace a friend at the Hardrock 100. I also led my first two trail running clinics with North Shore Athletics, and got to be a part of Gary Robbins’ FKT of the Wonderland Trail around Mt. Rainier while helping on a film project with the Ginger Runner.

As I set my goals for 2016, it’s time for me to now take a look back at my 5 biggest accomplishments in my 2015 racing season.

A few weeks ago, I completed the 7 day, 6 stage, 273 km Grand to Grand Ultra, North America’s only unsupported stage race. I’d left the North Rim of the Grand Canyon in Arizona, along with an international field of 116 other runners, with 91 of us arriving at the Grand Staircase in Utah a week later after running through sand dunes, slot canyons, river beds, and cactus fields. We carried all of our own food and supplies for the week, aside from water provided on course, and shelter and hot water at camp each night.

I managed to finish in 4th place overall and 1st in my age group, in a cumulative time of 34 hrs 45 mins, just 1 hr 34 mins behind Yukon Ultra champion Tommy Chen in first, 1 hr behind 5-times Marathons Des Sables winner Mohamad Ahansal in second, and 32 mins behind Swiss machine Peter Osterwalder in third. I couldn’t be happier with my performance in what was my first stage race, but I definitely learned a few things both in my research before hand and during the race itself.

Here are the 7 things I learned in my first stage race.

My race at the Fat Dog 120 (+10) Mile didn’t go exactly as planned, but was definitely still a success. After a few well-deserved days off, I was out to test out the legs which felt surprisingly good. But the fatigue would last for several weeks, along with an insatiable hunger.

Join me for the Fall edition of North Shore Athletic’s trail clinic, running every Saturday for 10 weeks starting September 12th. We’ll be covering everything from shoes, gear, nutrition and hydration, to race strategy, trail etiquette, and backcountry safety, with shoe demos, nutrition samples, prizes, guest speakers, and more.