Collecting Laps: one lap at a time to 100: Week 18, Auditing Your Foundation :

Collecting laps to 100 week 18 blog post image

Collecting Laps: one lap at a time to 100: Week 18, Auditing Your Foundation

This is part of a series of posts regarding how we prepare, plan, and train to complete the 100-mile Ultramarathon Umstead 100. Our series for this event: Collecting Laps: one lap at a time to 100. For all the ultrarunning series, here, follow the link. Training for a 100 . Alternatively, you can also follow our Podcast so you don’t miss the weekly summary post.

As we conclude our recovery week, we pivot to look at the next major training block. This phase will bring a sustained increase in weekly mileage, including long back-to-back runs and tune-up races like the Skinny Turkey Half, Derby 50k, and Shakori 40 later this fall. With this jump in volume, our single most important piece of equipment comes under intense scrutiny: our running shoes. They are the foundation upon which every single training mile is built.

Just as we’ve audited our lights/headlamps and created a fueling playbook, we must apply the same meticulous attention to our footwear. A failing shoe can be the root cause of countless issues, from blisters and black toenails to significant biomechanical injuries. Managing your shoe rotation and retirement strategy is not an extravagance; it is a cornerstone of smart, sustainable training that will allow you to arrive at the starting line healthy.

Assessment:

This week, you will conduct a Comprehensive Shoe Audit. This goes beyond simply checking the mileage on Strava. It’s a multi-point inspection to determine the true health of your shoes.

The Integrity Test (The Upper): Inspect the fabric upper for rips, tears, or holes, especially around the toe box and where the fabric meets the midsole. A breach in the upper can compromise the shoe’s fit, leading to friction and allowing debris to enter. Those can be very problematic as the miles start to pile in.

Know Your Numbers (Mileage Tracking): You must track the mileage on every pair of shoes in your rotation. Whether you use an app or a simple paper log, this data is your starting point. Generally, most road and trail shoes are designed to last between 300-500 miles, but this is a wide range. Your personal experience is what matters most.

The Feel Test (The Midsole): The foam midsole is the heart of the shoe and the first component to degrade. It loses its ability to absorb impact and return energy long before the shoe looks “worn out.” If a shoe feels “flat,” dead, or overly firm, or if you begin to feel new aches in your shins or knees after running in them, the midsole is likely compromised, and it might be time to replace the shoe, regardless of mileage.

The Grip Test (The Outsole): Especially for a race like Umstead with its crushed gravel and potential for mud, traction is critical. Flip your shoes over. Are the lugs on the outsole worn smooth? A shoe with a healthy midsole but a bald outsole is a liability on wet leaves or slick downhills.

Planning:

Based on your audit, it’s time to build your Shoe Strategy. This is your proactive plan for managing your footwear through the highest mileage weeks of training.

Buy Proactively: Once you find a specific model that works perfectly for you, become a student of its release cycle. When the next version is announced, the previous year’s model will inevitably go on sale. This is the time to buy two or three pairs at a significant discount. This saves money and, more importantly, ensures you have a supply of a shoe you trust, protecting you from an unfavorable “update” in the new model. Plan to have a fresh, but not brand-new (break it in with 30-50 miles), pair ready for race day.

Implement a Rotation: If you haven’t already, start rotating at least two to three pairs of shoes. The primary benefit is that it allows the shoe’s foam 24-48 hours to fully decompress and recover between runs, extending its effective life. A secondary benefit is that it slightly varies the stresses on your feet and legs, which can help prevent overuse injuries.

Assign Jobs: A great rotation strategy is to use your newest, freshest pair of shoes for your weekly long run. As they accumulate miles (e.g., 150-200), they get “demoted” to your shorter, mid-week runs. Your oldest shoes are used for recovery jogs or walks. And ready to discard becomes your yard/house work shoes.

Diabetioc Learning Notes:

For an athlete with Type 1 Diabetes, shoe health transcends performance and becomes a critical component of personal safety. The risk of foot complications, including neuropathy (loss of sensation), means we must be hyper-vigilant. A small blister that a non-diabetic runner feels immediately could go unnoticed by us, potentially developing into a serious infection that could jeopardize our training and overall health.

Your Assessment must therefore include a mandatory, non-negotiable Daily Foot Inspection. After every single run, take off your shoes and socks and visually inspect your entire foot. Look for red spots, blisters, or any signs of irritation. You cannot rely on sensation alone to be your guide.

Your Planning for shoe rotation is also a plan for foot preservation. However, there is a powerful analogy here we can use for our diabetes management:

Just as we rotate our infusion and CGM sites to allow our skin and subcutaneous tissue to heal, we MUST rotate our shoes to allow the foam to recover and perform optimally.
Using the same small area for a pump or sensor site over and over leads to scar tissue, which drastically impairs insulin absorption and CGM accuracy. This is the diabetic equivalent of running on a “dead” shoe—your system becomes unreliable and inefficient. Think of your shoe rotation plan and your site rotation plan as two parallel strategies with the same goal: ensuring the long-term health and reliability of your most critical assets.

This week’s actual numbers: