How to Train for Something Stupid: A 12-Week Plan for Normal People

Every great adventure begins with someone saying, ‘How hard could it be?’ Every great training plan begins three days later, with a look at the calendar.

So you signed up for a 20-mile hike, a hard ruck, a charity climb or whatever a buddy talked you into. Good. Here is a simple plan built around one idea: get a little better each week and do not get hurt. It is a general outline for reasonably healthy adults, not a personal program. If you have not exercised in a while, have any health conditions, or feel pain beyond normal soreness, check with your doctor first.

The weekly shape

Two strength days, about 30 minutes. Step-ups, squats, lunges, deadlifts, push-ups, planks.
Two easy cardio days, 30 to 45 minutes. Walking, cycling, anything you can do while talking.
One long day on the weekend. This is the one that matters.
Two rest days. Not optional. See the two-speed weekend.

The 12 weeks

Weeks 1 to 3: build the habit. Long day of 3 to 5 miles. No extra weight. Just show up on schedule.
Weeks 4 to 6: add distance. Long day of 6 to 9 miles. Start wearing the pack you will use, lightly loaded.
Week 7: back off. Cut the long day in half. Your body builds during the rest, not during the work.
Weeks 8 to 10: add the hard stuff. Long day of 10 to 14 miles, with hills and something close to your real pack weight.
Week 11: dress rehearsal. Use all your event-day gear, shoes, food and clothing. Nothing new on the big day.
Week 12: taper. Short, easy walks. Sleep. Eat. Resist the urge to prove anything.

The rules that keep you in one piece

Add load or distance, not both in the same week.
A blister is a problem to solve at the first hot spot, not the fifth mile after it.
Break in your boots early.
Sharp pain is a stop sign. Soreness is the toll road.
Practice eating and drinking on the move. You need to know what your stomach can take.

Event day

Start slower than feels right. Everyone around you is going out too fast. Eat before you are hungry, drink before you are thirsty, and keep moving at a pace you could hold all day. Then finish, sit down, and accept compliments.

The tank top with the three-step process is optional. Telling everyone about your training is, sadly, not.