Laura Muir, Steph Twell and Andrew Butchart set native indoor records at the Glasgow Grand Prix on Saturday.
Twell and Butchart breached 3000m times set some 27 years ago by Liz McColgan and Alastair Currie.
Muir just failed to snatch back the Scottish indoor 800m record set eight days ago by Lynsey Sharp, bettering her native best with a time of 2.00.70.
Chris O'Hare improved his own indoor Scottish mile record at the Millrose Games in New York, running 3.52.91.
The performances of 8.50.24 for Twell and 7.53.15 for Butchart also elevated them to fifth in the all-time Scottish lists indoors.
Twell, for her part, battled to fifth in a Women's 3000m race paced by Edinburgh AC's Maddie Murray for the first 1500m.
Kenyan athlete Nancy Chepkwemoi won it in 8.49.06 and Twell was just behind the bunched finish for 8.50.24 with no fewer than four athletes on 8.49.
Butchart hauled himself to seventh place as Mo Farah won the 3000m in 7.39.55.
Muir finished second behind Melissa Bishop.
"I really enjoyed it, it was tough and fast but good to be in a competitive atmosphere once again," said Muir.
"I love competing on home soil so I was glad I could run a good time out there today. That's my last race of the indoor season so I'll have a big block of training now ahead of the summer.
"I've exams, as well, and a period of altitude training but everything has to be about Rio and the Olympics, so missing out on the World Indoors isn't a huge regret or anything like that."