Originally Posted by
gapwedge
At 59 I have to be conscious of my heart rate. My HRM will show 75% HR max on normal days going 15mph. When the temps jump to 100* with no shade the same ride my %HRmax never gets below 87%. So I have to slow my pace to 10-12mph just to complete a 60 minute ride. Be careful. It can be dangerous.
Similar story/reasons as gapwedge.
Probably today, around 90. Shorter than normal ride for sure. Shadiest route possible. Just needed to get out and road ride.)
(But MTBing in 86-88 and humid felt worse.)