I phase my training every year
Spring 8 weeks - Walk with boots and pack:
3.2 km city walk for 1st week. 30 lbs pack
3.2 km dirt trail for 2nd week. 30 lbs pack
6 km dirt trail for 3rd week. 30 lbs pack - to completion
6 km dirt trail for 4th week. 40 lbs pack - to completion
6 km dirt trail for 5th week. 50 lbs pack - to completion
6 km dirt trail for 6th week. 60 lbs pack - to completion
6 km dirt trail for 7th week. 40 lbs pack - for time benchmark
6 km dirt trail for 8th week. 40 lbs pack - for best time
Builds up out of shape muscles that atrophied in the prev winter.
Summer 4 weeks - Hybrid:
1.6 km city run for 9th week - to completion
6 km dirt trail for 10th week. 40 lbs pack - for best time
3.2 km city run for 11th week - to completion
6 km dirt trail for 12th week. 40 lbs pack - for best time
Builds up cardio while keeping up conditioning of muscle
Summer second 4 weeks - Hybrid:
3.2 km city run for 9th week - for time benchmark
6 km dirt trail for 10th week. 40 lbs pack - for best time
6 km city run for 11th week - for best time
6 km dirt trail run for 12th week. 40 lbs pack - jogging for best time
I go out every other day for recup. time in between.
After week 12, it is all alternates pack runs and and 6km city jogging alternated. Weight keeps adding on pack in 5lbs increments.
FYI - Boots used are Oakley SIs. Nice and light like a runner, but with better ankle support.
Pack is a PLCE 90L Brit. bergan, usually loaded with something real comfortable like books or sandbags.
I drop about 30 pounds around summer. Then I get fat in winter with work and no time to train.