green lakes endurance runs                                                         100 km & 50 km trail races

No, there is no paper registration for this event. 

If you register prior to August 1, you can register with a personal check or money order through RunRace.net. RunRace will walk you through the registration process. Please read the Registration Rules and Deadlines.

RunRace explains all credit card processing is performed through a safe, secure gateway using the latest in encryption technology. RunRace reports they do NOT collect or store any credit card information. They use Authorize.net as their credit card gateway. Not only is this considered secure on-line registration, the entrant pays no additional credit card fees, and RunRace does not try to sell you anything with your credit card.

No, the 50 km and the 100 km are two separate and distinct races with two different start times. Runners will only be in the results of the race that they entered. Runners are not allowed to change races or start times on race day. For more information, please see Registration, Race Rules. 

Certainly there are "easier" 100 km road races, but there are more difficult 50 mile trail races. If a runner has been successful at 50 km or 50 miles, this trail course would be a reasonable next step up the race distance ladder. The course is moderately challenging, and has no technical hikes. The ave. low 58F, ave. high 78F. An unusually hot humid day would require a cautious race, and cooling interventions, e.g. ice bandanna around the neck (see below). Ice is supplied at the aid stations.

The 14 hour cut-off also needs to be considered in your decision. 

A runner does not need a crew. There are two well stocked aid stations on the 12.5 km course. Staying in the camping grounds Sunday night or a local motel would help the 100 km runner without crew. See accommodations.

However, it is recommended that you have a crew if you're concerned about making the 14 hour cut-off for the 100 km. There will be limited race support after the course closes at 8:15 p.m.

Training as you would for the 26.2 mile official marathon distance will help you race well at the 50k marathon distance.  Race planning and making good decisions during the race will help your race more than adopting a different training schedule.

For a more in depth explanation, check out this great resource from the Western New York Ultra Series website. Ultramarathon 101 - Class Notes