The 23rd annual Time Trials, Iowa's longest running mountain biking event, is set for Saturday, April 27, in Decorah.

This year's course will be approximately 8.75 miles, with a course winding through rolling, wooded areas of the Decorah Parks System and including lots of technical single track. Approved helmets are required.

There is a $25 entry fee, with $5 designated for maintenance and improvements of mountain bike trails in the Decorah Parks System. All pre-registered riders, postmarked by April 19, can select their start time first.

Also this year are the kid time trials. Helmets and bikes suitable for off-road terrain are required.

For more information visit decorahtimetrials.com.