May 25 2026: Mark Pfeiffer places 48th at the Master's Men 55+ Race at the 81st Tour of Somerville p/b Unity Bank in a group sprint

Aug 23 2025: Mark Pfeiffer DNF'ed at the Men 45+ Cat 1/2/3/4 Race at the The Aubrey Gordon Memorial Criterium in a group sprint

Aug 23 2025: Mark Pfeiffer places 38th at the Men 55+ Cat 1/2/3/4 Race at the The Aubrey Gordon Memorial Criterium in a field sprint

May 26 2025: Mark Pfeiffer DNF'ed at the Men Master 55+ Race at the 80th Tour of Somerville pb Unity Bank in a group sprint

Aug 25 2024: Mark Pfeiffer places 51st at the Men Master 45+ Cat 1/2/3/4 Race at the QCW Summer Slam in a group sprint

Aug 25 2024: Mark Pfeiffer places 29th at the Men Master 55+ Cat 1/2/3/4 Race at the QCW Summer Slam in a field sprint

Jun 4 2023: Mark Pfeiffer places 41st at the Men 55-59 Masters Race at the South Mountain Cycle & Cafe in a group sprint

May 30 2023: Mark Pfeiffer places 55th at the Men Master 55+ Race at the 78th Tour of Somerville in a field sprint

May 21 2023: Mark Pfeiffer places 45th at the Men 55-59 Masters Race at the Kitchen Road Criterium in a field sprint

May 7 2023: Mark Pfeiffer places 37th at the Men 55-59 Masters Race at the Emrick Boulevard Criterium P/B QCW in a field sprint