How to get her number after she says she's been running a lot lately

A line about running after work is her telling you what fills her time and how she unwinds. She is not saying she wants to hear from you more, and she is not testing you. The mention of a specific race is a little more information about how she spends her energy, and it's a good thing to acknowledge because it's concrete. Read it at face value. If she had wanted to move things along, she would probably have asked you something back or left the door open with a question. Here she has mostly just answered, which means the next move is yours to make, and it should be a small one.

The real signal to look for is whether she keeps the conversation going. If she replies warmly to your response about the race and adds a detail, she is engaged and a number ask is reasonable. If her reply is short and does not add anything, she may be fine chatting here but not ready to move off the app. Both are normal, and your job is to notice which one you are getting before you push.

The first part of your reply should land on something she actually said. A question about the 10k, how her training is going, or what she likes about running after work all work, because they show you read the detail and they keep the focus on her. Once she has answered, you have a natural bridge. The number request becomes the next thing in a conversation that already has momentum, not an interruption.

The shape to aim for is one reaction to her running, then a light turn toward talking outside the app. The turn should be easy to say yes to. Something like suggesting that you keep talking somewhere else, with the number offered as the way to do that, is much easier to accept than a direct demand. Leave out any proposal of a specific plan in the same message. Let her answer the question you asked before you add a second one.

Send your message in the afternoon or early evening, when she is likely to have time to reply properly. Avoid late night, because a request for a number at 2am can read as more intense than you meant it to be. If she replies warmly and gives you the number, text her the same day or the next morning with something simple that refers back to the race or her training so she knows which person you are.

If she does not reply, wait a full day before you say anything else. If you do follow up, keep it to one short message that adds something new, like a question about how the race went or a bit about your own week, not a repeat of the number ask. If she still doesn't respond after that, let it go. A second unanswered message is a clear enough signal, and sending more starts to look like pressure rather than interest.