Sorry, but to ensure a positive user experience photo tagging is only supported on devices at least 600px in width. If on a phone, switching from portrait to landscape may help you. If not you may have to move to a tablet or computer instead. Apologies for the inconvenience.
It's impossible to tell if this photo is part of a burst shot as their is no EXIF timestamp data.
Tips for tagging photos
You can input either a rider's bib number or their name
You can even input a sponsor to help identify obscured riders
Mouse-over the image for a magnified view (click it for an even better view)
Type “-” for an obscured digit to get a hint list - e.g. 2-6
If a rider you've identified isn't found, it means they're not in the results :( Maybe they didn't complete a run or are using the wrong board? If you know their name you can still tag them; prefix it with ! - e.g. !samhill
To add a second/third/etc tag to a photo, start the tag with a “+” - e.g. +997 or +stevepeat
Shortcuts for faster tagging
Go full-screen for a larger, clearer view; try F11 on a windows PC, or ⌘ + Control + F on a Mac
Hitting = or ] will immediately tag a photo the same as the previous photo
Finishing a tag with an “=” will apply that tag to all of the photos in the current burst - e.g. 691=