Quad pain

[Carolanne]

After cycling for approximately two hours I get pain in both quads. I have been a avid cyclist for the past 13 years and this just began to happen about a year ago. The pain remains for about 20 to 30 min after I get off of the bike. There is no residual soreness after that. Anyone ever experienced this or have any ideas? My bike fits and I have tried numerous things including high cadence, standing and sitting etc.

[FishrCutB8]

Are you hitting more hills these days, or doing increased tempo work? These things seem to increase quad soreness for me....