How does temperature affect running performance?

Running in the cold and the heat can impact muscles, heart rate and oxygen levels.

Here's How Weather Conditions Affect Your Running Speed

Frontiers Diverse Effects of Thermal Conditions on Performance of Marathon Runners

Relationship between running performance and weather in elite marathoners competing in the New York City Marathon

Here's How Weather Conditions Affect Your Running Speed

How does temperature affect running performance?

Here's How Weather Conditions Affect Your Running Speed

How I Balance Drinking with Running?

Do outside runners normalize their recorded times to correct for outside temperature? - Quora

What hot temperatures can do to your running – and how to cope

The science behind cold weather and running performance - Canadian Running Magazine

Adjust Your Training Paces For High Temperatures - V.O2 News

Do outside runners normalize their recorded times to correct for outside temperature? - Quora

How to run in the heat - Runners Connect

Is It Harder to Run in the Cold?