Category Archives: Weather

It’s Just Too Hot, Guys

Today, after a few easy and off days, I went out for some speed repeats. It’s excessively hot in Las Vegas right now, with high temperatures exceeding 115°F, and low temperatures barely reaching 90°F before going up again with the sunrise.

It was 91°F at about 5:45am when I started the first of what I planned to be five (5) 90 second hard repeats on a long stretch of trail. After two of these, I grabbed my water bottle from the stop point and decided to end the workout right there, heading back.

I wasn’t in serious distress, nor did I go too hard on the repeats. In fact, I probably accelerated into them better than I had been doing on repeats in a while. I ran them smart and my pace was solid. I didn’t feel sick or anything. But the combination of quick fatigue and the heat told me that what little I had done was for now enough. I walked back to the ranch.

I’ve stated before that one of my goals with this summer’s Indy Marathon training was to address training seriously in the heat. So far, as temps have risen this past month, I’ve handled what speed workouts I’ve done in the hotter weather fairly well.

The only workouts I don’t feel good about so far are my longer runs. I’m coming up on three weeks since my last true long run (though I have a 10 miler planned Saturday), and I have yet to exceed 10 miles. It is early and still base training, and the plan all along was to backload the longest/hardest running for after Labor Day when the temps drop back to human levels. But I’m still not able to get what I’m looking for out of current long runs.

All of this said, I have to be mindful not as much of my continuing adaption to the typically extreme vegas heat, but of these stretches where it’s very hot even for a Vegas summer. This is a true heat wave, with temps exceeding 115°F, the top end of what heat Vegas typically gets. Much of the Western United States is in this massive heat wave right now.

This is not the time to power through a workout if I find my body struggling or tiring more quickly in these conditions than expected. While sleep and nutrition can also be factors, I’ve actually done mostly well on both those fronts this week to where I can discount those being key contributors. If anything, I should have been more ready to go for this workout than typical given that and the extra recent recovery.

But extreme heat takes a lot out of you, prior heat adaptions or not. I had water with me but hydration had negligble effect on how it felt.

Sometimes it just makes more sense to cut a workout in those conditions short, and either run it out otherwise later (I can and may cross train after work) or just take a mulligan and move on to tomorrow.

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How I Hydrate (Especially Around Hot Desert Runs)

Photo by Snapwire on Pexels.com

Since I now live in the desert, the higher altitude fringe of the Las Vegas Valley, I’ve gained a lot of experience in running in these hot and dry conditions. To do well running in these conditions, i obviously had to learn how to hydrate effectively.

Workout hydration is a delicate balance. You need to hydrate to avoid the performance (and possibly health) damaging effects of dehydration. But if you consume more fluid than you need, you’re simply going to end up needing the restroom/toilet too often too soon to be worth the trouble.

Over my years of running I have through trial and error developed a useful approach to hydration that running in the hot Vegas desert has helped me fine tune into a reliable methodology.

It is worth noting that training with some degree of very mild dehydration can be useful for developing aerobic fitness. The line between useful and detrimental is very fine, not to mention the line between proper hydration and needlessly overloading your kidneys and bladder. You also must bear in mind that carrying hydration adds weight to your body and will to some subtle degree slow you down on your run.

Thus I don’t mind being a little “dry” during a training run, whether it’s an easy run, a harder speed workout, or a long run. However, I want to avoid tipping over the edge into performance loss from dehydration.

So, my objective is to go into a training session with a rudimentary amount of pre-run hydration, then hydrate as needed during or after the workout.

My Keys to Hydrating Workouts:

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Heat Acclimation and Blood Volume In Running

One of the subjects Jonathan Savage (the FellRNR running guy) discusses at length is heat acclimation training, where you train specifically in hot conditions to either prepare yourself to race in hot conditions or to successfully race in less extreme, even more normal temperatures.

This is of course amusing to me as we in Las Vegas (and most of the United States, admittedly) are currently suffering through a bout of extreme heat. And in Vegas, we’re used to high heat, with summer days topping 100° Fahrenheit (38° Celsius), but the 110-120°F heat we have now is even above our typical pay grade.

Thus, those of us who run in Vegas get to practice heat acclimation training whether we want to or not!

Of course, Savage refers mainly to winter training for a spring marathon. In the winter temperatures fall below freezing in most parts of the country. If eventually you have to run a marathon in 60-80°F weather (15-25°C), you’re going to get hit hard by relatively warm conditions, even though you’d love to have those conditions in the middle of August. Your body will have acclimated to the other extreme of those cold conditions.

On top of that, Savage typically runs ultra-marathons in more extreme conditions like the hot and dry Badwater 135 race. So he’s not just dealing with a slightly warm marathon in London or Boston. He’s dealing with potentially 100°F heat with doubly dehydrating dry conditions. So even if it’s negative celsius or fahrenheit outside he needs to bundle up to prepare for running in 100°F weather.

Now, all that said, just because you or I have no intention of attempting such a race coming out of winter doesn’t mean that heat acclimation isn’t valuable.

Even with no races on the horizon, running in summer heat and the resulting heat acclimation (within healthy reason: Don’t go taking extended runs once the temperatures are over 100° without an abundance of cooling resources and support)… has one additional key benefit.

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Would I drop out of the 2019 Chicago Marathon?

Despite growing up in the hot Las Vegas desert, I actually don’t like hot weather. To this day I still struggle a lot in warm temperatures. This might have something to do with why I acclimate so well to cooler wet climates like Seattle and the extremely cold winters of Chicago.

I work hard year round to acclimate to rising or falling temperatures. Spring and summer not only are no exception but in my case it’s crucial to handling runs in summer heat. My forehead for some reason won’t sweat for some time when it warms up (it eventually will by mid/late summer) and that exacerbates how hot conditions feel for me.

Also, with a bigger frame than other runners, I absorb and retain heat a lot better than others. That’s great in winter, and not so great in summer.

I have a hard time with basic runs when it gets hotter than before. 65-70 degrees will probably feel okay in September, but right now it’s like a sauna of death for me to run in. I have a hard time going more than a couple miles without stopping, and in suitably hot conditions I may even have to stop for good after a couple miles.

If regular runs are hard, you can imagine what speedwork and races feel like. Speedwork at least usually allows you to stop and rest every few minutes. A race, however, demands a non-stop effort until you reach the finish line. Even a 5K may be too much if it’s warm enough.

Now consider the challenge of running a full marathon. By itself in ideal conditions it’s a monumentally difficult feat. Add in any warmth above 60 degrees and you’ve exponentially increased the difficulty. Once temperatures reach an otherwise mild 70 degrees you actually begin to put runners’ health in danger.

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How I use the weather forecast to inform my training

For those of us who don’t live in a perpetually hot and sunny climate, the weather plays a sizable role in how we run outside.

Many up north during winter condemn themselves to the limits of the treadmill, with its varying benefits and drawbacks. But many either don’t have or refuse to use a treadmill, and need to work with what nature gives us.

I live in Chicago and do all my running outside. This winter in particular started out very mild and stayed that way until mid-January… when suddenly: Heavy snowstorms, -50°F windchills, perpetually icy conditions, brutal windstorms, unpleasant cold rain that the frigid temps made sure to ice over afterward, and so on. This obviously affected how much running, and what kind of running, this region’s people can do outdoors.

This is nothing new. Chicago weather’s just as important a factor during summer. When Chicago weather gets hot and muggy, or we get the occasional severe storm, that changes the scope of any outdoor training workout. In some cases, it limits how much time you can spend outside (some will run through it but there’s a variety of reasons I avoid running in substantial rain, plus unless you like being an electricity conductor you should never run when there’s lightning). In most cases, it affects your performance, how much hydration you need, etc.

It occasionally surprises me how taken-aback locals are by incoming severe weather, before I realize I pay closer attention to day-over-day forecasts than most people.

Whether you run or not, you honestly should review the weather forecasts every day and know in advance what weather and temperatures are coming. Weather should rarely take you by surprise.

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Quick thoughts on a slippery 10K track workout

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In the sunset darkness of the Wilson Track, with snow pellets coming down, there was one set of footprints coating the growing frost in Lane 3. That was me.

I ran 3 x 2 mile repeats last night at the Wilson Track. The 3x2mi is a 10K workout from Greg McMillan that while demanding will clearly show the pace you’re capable of running in a 10K. I’m training for the Mardi Gras Chaser 10K in early March… along, of course, with the Vancouver Marathon.

Thanks to snow flurries and general cold overcast throughout the last 24 hours, the track had some dubious patches of water and generally required some caution for use. I stuck to lane 3 as that was the inside-most lane enough to use in its entirety; even then, I had to ride the outside edge in some spots along the home stretch to avoid overlapping inside puddles.

However, snow pellets came down as I began my 2nd rep. Never mind hitting me in the face on the front stretch… pellets began coating the track surface, limiting traction and slowing me down while demanding more of my lower body to maintain form and movement. Nothing keeps your stride compact quite like trying to run tempo reps on a frosty track.

Most would have stopped a speed workout in this situation, unable to meet pace expectations and fearing falls and injury in the conditions… especially in footwear like mine: I was wearing my Topo Athletic ST2‘s, flats primarily intended for racing and speed running. I had the added bonus in wearing the least suitable running footwear for icy conditions!

However, along with knowing how to run in snow and ice, I also realize a tempo workout can still serve my desired purpose in less than ideal conditions. They’re about more than hitting a goal time.

Instead of disappointment in reps at a pace below my PR time, I see I can capably run a 10K at a pace 20 seconds slower than my PR in icy, increasingly slippery conditions.

Plus, with three trail races still to come, I also need to prep for running fast on uneven, probably slippery conditions… as I had to in the Tour De Trails 3 Miler a couple weeks before. Maintaining the best pace I could on a frosty track that didn’t provide great traction helps develop lower body muscles that will need to do serious work in next month’s 6 Miler plus the longer trail races beyond.


Now, not everyone should do this, and I wouldn’t keep a speed workout going every time ice started coating the surface. There are a lot of winter days where I’d bag a planned speed workout and do something else.

But this was one day where, as the conditions grew farther from ideal, the workout still provided growth opportunity and still served its purpose. Quality workouts intend to prepare you to race, not just hit a goal time.

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Replacing long runs in extreme weather with multiple runs

My brother-in-law runs multiple half marathons and shorter races throughout each year. Living in the Las Vegas desert, where temperatures exceed 100°F (38°C) through most of the year, long runs are impractical.

You can’t run outside in such extreme heat for more than half an hour, not even in the morning (as temperatures don’t drop below 80°F many days, and that’s already rather hot for running). And running 10+ miles on a treadmill, if the gym will even allow it, isn’t psychologically feasible for most.

So how does he train for half marathons? He runs halfs at around 1:40, so he clearly gets in excellent shape for them. But he attests he certainly doesn’t do long runs.

So what does my brother in law do?

Here’s how he outlined it for me (and I’m describing this some in my words rather than his):

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