This has got to be a problem with Garmin Connect, but I'm not sure why it's taking them so long to fix it. As long as your device is recording time, distance, and average cadence, then Average Stride Length can be calculated using these other measure. I've created an Excel sheet that does the calculation, but I don't believe I'm allowed to upload an Excel file. Here's the formula, which assumes distance is in miles, and time is in hours:minutes: seconds:
=(DISTANCE*1609.34)/(AVERAGE CADENCE*((HOURS*60)+MINUTES+(SECONDS/60))
Thank you for the formula. My maths is not too good. What is the formula if I use km as unit? What will be the average stride if I run 400m in 1.40 and my ave cadence is 185? Thank you!
I hope Garmin can fix the stride issue ASAP.