Experience with sizing

I ordered a size 7.5 online and they were horribly tight. I drove 30 minutes to try on the next size up before buying again... And I'm soooo glad I did. I ended up most comfortable in an 8.5. Normally I wear a 7/7.5 in shoes but definitely had to size up! (Women's 585) I don't think I have particularly wide feet but I do like very high arches.