For The RepsBlogMain siteSearch articles
For The Mile

100K Ultra Completion

100K completion plan blending long runs, back-to-backs, and hike-run.

By For The RepsPublished Jun 3, 2026Updated Jun 3, 20264 min read
In this guide8 sections
  1. 01Who it is for
  2. 02Goal of the plan
  3. 03Weekly structure
  4. 04Key workouts
  5. 05Suggested pacing guidance
  6. 06Recovery guidance
  7. 07Beginner-friendly explanation
  8. 08Practical tips
Real marathon runners holding a steady race pace
Real marathon runners holding a steady race pace. Source: https://commons.wikimedia.org/wiki/File:2025-09-21_Moscow_marathon,_runners_01.jpg. 2025-09-21 Moscow marathon, runners 01 by Retired electrician, CC0 (http://creativecommons.org/publicdomain/zero/1.0/deed.en). Sourced from Wikimedia Commons.

Who it is for

This plan is for advanced runners working toward a 100k goal with 6 runs per week.

Goal of the plan

The source goal is finish. 100K completion plan blending long runs, back-to-backs, and hike-run.

Weekly structure

  • 28 recommended weeks
  • 26-36 supported week range
  • 6 runs per week
  • 21 taper days

Key workouts

The source focus areas are Long Run, Back To Back, Hike Run.

  • Long Run sessions
  • Back To Back sessions
  • Hike Run sessions

Suggested pacing guidance

Suggested addition

Use Marathon Pace Check to anchor effort if you already track benchmarks.

Most easy runs should feel conversational. Quality days should finish with control rather than strain.

Recovery guidance

Suggested addition

Keep easy days easy, sleep consistently, and reduce volume before adding intensity if soreness lingers.

Beginner-friendly explanation

Suggested addition

If you are newer to this distance, start at the low end of the run frequency and keep the harder sessions conservative.

Practical tips

Suggested addition
  • Warm up before faster work.
  • Keep one day flexible for life schedule changes.
  • Use route, terrain, and weather notes when comparing progress.

Related posts