Eight Fenland Running Club members took part in the Airtricity Dublin Marathon and five returned with personal bests.
PBs came from Martin Jennings 3.21.21, Paul Griffin 3.51.56, Jay Gilbert 4.19.22, Tracy Veenendaal 4.36.29 and Julie Garner a 38-minute best in 4.50.12.
On Sunday Martin Jennings was again on the PB trail with a 39.38 at the Bungay Black Dog Running Club 10K.
David Brammer finished in 47.53.
The second Frostbite Friendly League race at Bushfields in Peterborough attracted 480 runners from 16 clubs.
Fenland finished 11th overall and slipped two places to 8th after the two races.
Results: Gary Bligh 37th 29.38; Tim Chapman 71st 31.26; Rebecca Cousins 94th 32.06; Stuart Follen 128th 33.12; Dan Wate 137th 33.34; John Chapman 152nd 33.57; Richard Betts 155th 34.02; Justin Showell 158th 34.09; Colin Ferguson 159th 34.11; Ann Trett 170th 34.37; Rod Sinnott 187th 35.17; Andre Pittock 191st 35.22; Paul Griffin 198th 35.37; Maire Irlam 206th 35.52; Colin Simpson 235th 36.45; Adam Chown 250th 37.09; Clive Harrod 328th 41.12; Julie Garner 387th 44.13; Joice Showell 400th 45.11; Rebecca Richardson 422nd 46.46; Sharon Bird 440th 48.42; Denise Griffin 441st 48.43; Larissa Follen 444th 49.08.