Jeff, my daughter carries an EpiPen with her at all times, including during a ride or run. She has nut and fish allergies. Although it might sound far-fetched that an anaphylactic event from a food allergen could happen in the middle of the forest, she has had this happen during a trail run. Just before the run she came in contact with a peanut butter-contaminated utensil at a friend’s place, then later wiped sweat from her face around the mouth with her hand and instantly had a reaction. At the time she didn’t carry Pens during her runs. Luckily she was near a road and the ambulance was able to get to her easily. Now she goes nowhere without a Pen.
She carries them in a slim Nike runner’s waist pack for quick access. Works well even on a trail ride. This one: https://www.amazon.com/Nike-Lean-Waistpack-Size-Black/dp/B00ZQU5U8G/ref=sr_1_3?keywords=nike+running+waist+pack&qid=1565714940&s=gateway&sr=8-3
Hope this helps…