You have uploaded 65 swimming activities, and 12 of them have been of similar distances (within 10 percent)!
Here are your 5-fastest swimming activities of a similar distance:

• Morning Swim - 3.0km @ 20:00 min/km pace.
• So close to 3k in 1h!!! - 2.9km @ 20:41 min/km pace.
• Tri stars to upper Thetis - 3.5km @ 21:25 min/km pace.
• Crystal - 3.0km @ 21:40 min/km pace.
• Morning Swim - 3.0km @ 21:40 min/km pace.

Over these 12 similar activities, you have travelled approximately 36.80 kms at an average pace of roughly 23:14 min/km!
Your latest run was at a pace of approximately 23.438min/km!
Looks like you went a bit slower this time! Remember that it's important to take some rest days, and do some rehab / prehab / strength and conditioning training too! If you weren't intending to go slower, take a moment to listen to your body, and see if you need something. Check in with yourself!