ehat to wear for half marathin weather calculator

As a result, Debno's average race temperature over the last 10 years is 42.4 ☏. (This year they were both April 6.) That's earlier than most of the other spring marathons. (This was a common theme when Kenenisa Bekele, who finished Chicago in fourth in a time of 2:05:51 this weekend, made his debut in Paris last spring.) Debno is on rolling country roads neither is anywhere near as optimal as, say, Chicago or London.īut look at the dates: Both Paris and Debno take place in the first week of April.

Paris has a bunch of underpasses and is often referred to in the press as a 'slow' course. But neither Paris nor Debno has an especially flat course. So what's the secret of these three races? Berlin is no surprise - it has arguably the flattest, fastest course out there and has hosted the last six men's marathon records. By running a massive web of these comparisons, they can produce a single number for each race that effectively tells you how much faster (or slower) you'd expect to run on that course compared to the 'average' marathon course. Basically they take a huge database of elite marathon performances and compare how the same runner performs on different courses. On that note, it's interesting to look at the Association of Road Racing Statisticians' ' Average Race Time Bias' rankings for different marathons. If I was doing it again, I'd break it down by week or day, because there's a big difference between early and late April or October. Of course, months are a pretty blunt tool. (This draws on the awesome Historical Annual Marathon Rankings compiled by the Associated of Road Racing Statisticians.) Here's my rough Excel contour chart of the trend: That's nice in theory, but how does this play out in real life? One of the graphs that didn't make it into the final piece was a look at what month each year's fastest 200 marathons occur, and how that has changed since the 1950s. A marathoner running 2:05 is consuming more than twice as much oxygen as a 4:00 marathoner, and thus generating more than twice as much heat - so of course you'd expect the faster runner to prefer a cooler day. body size) being equal, metabolic heat production is proportional to VO2, and VO2 is proportional to running speed. Midpackers (red line) do best in the mid-40s. But faster runners, who generate more heat, benefited from cooler temps, with the top one percent (green line below) peaking at 38.9☏. When French researchers analyzed the finishing times of 1.8 million marathoners over a 10-year period, they found that a race-day temp of 43.2☏ produced the quickest times overall. In the sub-2 feature, I discuss some interesting research from INSEP in France suggesting that the ideal temperature for very fast marathons may be colder than we generally assume: For starters, some bonus material about the optimal temperature to run a marathon. There are a few leftovers from the sub-2 piece that I'd like to post over the next few days. One of the nice things about having a blog is that it gives me room to expand on interesting topics that didn't quite fit into articles I've written elsewhere. If you haven't checked it out yet, please do! There's a huge amount of data and analysis packed in there, so there should be something to interest or surprise just about anyone. It's also the culmination of months of work by a team including my editor Christine Fennessy, designer Thomas Porostocky, and digital designer Daniel Fuehrer. A few days ago, my 'Running the Data' feature on what it will take to run a sub-2-hour marathon went live (it's in the November issue of the print magazine).

Ehat to wear for half marathin weather calculator