Maik “Fast Cat” Twelsik is the German cycling machine. This Tucson, AZ transplant has been competing in Ironmans since 2006. We believe his biggest accolade is having the fastest bike split at the Ironman World Championships in 2015, but we may be a little biased. Maik is married to the accomplished Hillary Biscay.

Maik’s strong suit on the course is the bike portion, which has led him to many Ironman accomplishments, including multiple wins at IM Wisconsin. Maik chose a Dimond as his bike of choice because he has no time to lose. He said he’s more relaxed getting off the bike and heading into his run than on any other bike.


December 25th, 1980


Exter, Germany


Pro Triathlete

Racing Since

1999, Ironman races since 2006