MiniProfiler Extensions allows save MiniProfiler results into file (or another source) by log4Net

All what you need is:

var logger = LogManager.GetLogger("Logger"); //Init Log4Net Logger

MiniProfilerLog.SetUpLog4Net(logger); //Set up profiler with logger

and use Profiler as usual (see [MiniProfiler site] (http://miniprofiler.com/) or example Project)

##Install from Nuget

 Install-Package MiniProfiler.Log4Net