Marathon Training: Week 1

I haven’t really done any long distance running in about 2 years. Not properly.

I’ve gone for a few 3-5 mile runs every now again but my primary focus in my training over that period has been resistance training to try to improve my lean body muscle tissue to improve my responsiveness to insulin, to gain some size and to feel more athletic.

Getting into the marathon completely changed my mindset. Now my training is revolving around fitness, endurance and maintaining my strength wherever possible.

What is interesting is that when I’ve previously done long distance events (10+ miles) I wasn’t on insulin – still in the depths of my honeymoon period without requiring medication and able to manage my diabetes with diet and exercise whilst regulating my blood sugars relatively well.

This is different though. Now I’m insulin dependent and starting from square one. The main difference between resistance training and running is that one is anaerobic and the other is aerobic.

I thought it best to start slow. Give me a starter for ten and go from there seeing as I have around 9 months until the big day. So I set the treadmill for 10.0 km/h (for me a relatively straightforward pace) and just ran for an hour just to gauge fitness and how my blood glucose levels changed over. No target distance set – just run.

I’ve repeated this a few times over the week. Twice on the treadmill and twice outsides and found similar results. Fitness wise I’ve been fine. There’s work to do to get the miles in my legs found by a severe case of cramp half way into my fourth run. In terms of my levels they seem to drop 0.8mmol/l per mile I complete. So if I run 5 miles my overall levels drop by 4mmol/l which means I’m having to start my runs in the high single/ low double-digit numbers to make sure that I don’t drop into hypo range.

I’m hoping to see this ratio improve over time. Only one week in. Few more to go yet.

Until next time.


I’m running the 2018 Virgin Money London Marathon on behalf of JDRF UK and the amazing work they do for Type 1 Diabetics. If you’d like to donate and help me reach my goal, please visit where your support will be hugely appreciated. Thank you!


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Dan has been a Type 1 Diabetic since November 2011 and writes about his experiences living with two autoimmune conditions (Type 1 Diabetes and Ulcerative Colitis), nutrition, exercise and living an overall healthier life on his blog and via his social media platforms.

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