Is there a reason why TR starts the week with Monday instead of Sunday? It’s a US company with mostly US users
Several training apps do this. It is just a practical way to plan out a training week for people who work traditional M-F jobs. As the weekend usually makes up a significant block of your training week, it helps to keep Saturday and Sunday together as you view a “week” of training work.
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Huh, I never realised it would be anything different but then again I look at Aus calendars, not American ones.
Because the first day of the week is Monday.
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Do we know this for a fact? I’m curious, there certainly seem to be a large representation from the rest of the world in the forum.
Anyway, I think it makes sense to keep Saturday and Sunday together as a final part of the training week.
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Because for most people, they do long workouts on Sat and Sun.
Treating Monday as the start of the week - which it is - makes sense.
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This. I had never realized, until I made a spreadsheet and started keeping track of my rides, miles hours, time in each zone, and HR TSS, how inconvenient our calendar starting the week on Sunday is. It really was an issue on my rest week, because I’d want to do a big block right before rest (or catch up on Sunday due to some bad weather earlier in the week).
Luckily, most apps have the option to change their calendars to start on Monday. So all my apps have been changed.
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Both my TrainingPeaks and Intervals.ICU calendars start on Monday as well.
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sorry, but such an existential question… can only come from US…especially with the emphasis that it is an US company…Why do you usually say blue sky, not black sky? during the night, the sky is black…
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There’s a fair amount of variety in cultures across the world as to what day is the first of a week
And it’s certainly not Sunday! 
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There are variations (cultural, religious, historical) for first day of week (Monday, Sunday or Saturday).
ISO 8601 says it is Monday. Because where I live, I agree 
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And forget about first week of day, what about 12h vs 24h clock? Every time I see AM/PM, it takes me half a sec to understand it. And TR workout starting time keeps rubbing my nose in it
And standards are important.
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When I grew up it was the Sunday to Saturday calendar but more and more start on a Monday and I prefer it and opt for it if I have the chance. Its good IMO to lump stuff into a M-F weekend and a two day Sat/Sun block.
Wait, are you saying it should start with Sunday? Why would the week start with Sunday?
Edit: I just went through all of my calendars (TrainingPeaks, Intervals.icu, iCal, TR) and all start with Monday. Starting with anything other than Monday just seems weird to me. I’m American.
I have a simple way to remember. What days are the weekend? Saturday and Sunday. Week-end. As in, end of week. So if Sunday is a weekend, which means the end of the week, unless “end” means something in a different language, the end is not the beginning.
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Like I said earlier I was brought up Sun to Sat because of the Christian (Edit as corrected Catholic) calendar (I think one example is Holy Week Sun - Sat, then Christ rising on Easter Sunday which is a new beginning) but I prefer and will choose the week starting on Monday (the M-F working week) and the Saturday & Sunday in one block rather than book ending the week.
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