It all depends on what you would like to do .
1. You could go out through red rock canyon & stop @ Bonnie springs it is only a 25 to 30 min ride through red rock but bonnie springs is a nice place to visit it is a old west type setting with a petting zoo & bar that serves food , from there you can ride up to Mt Springs Saloon a biker friendly bar , about 20 min or so from red rock .
2. if you have the bikes for a 24 hour rental you could
A. Go to Goodsprings to the Pioneer saloon a very biker friendly bar that has a lot of history & has good bands on Fri ,Sat, Sun afternoons . From there you could take a nice ride into Sandy valley & go to the Idle Spur saloon , a nice ride over the pass but you have to come back the same way .
3. After leaving the Good Spring area you could head back to I-15 & go south to the Nipton exit ( about 20 min ) & head east to Nipton California , there is a small tavern store there with a B&B and the tavern has some great Burgers .
4. Then you could head east from Nipton to Searchlight NV & get a $1 beer @ Teribble Herbs ( be sure to check out the juke box only 30 in the world like it ) .
5. Atfter searchlight you can head north towards Las vegas , if you have enough time you could head to Boulder City , there is a great brew pub there & plenty of places to grab a bite , the Backstop Bar is a good place to stop , no food but cheap drinks .
6. You could also take the ride through Lake Mead towards the town of Overton , about 1/2 the road has been resurfaced & it has some nice curves & views , from there you could go to the Valley Of Fire state park .
7. The ride to Laughlin-Bullhead city area is kinda boring even though you could stop in searchlight for a $1 beer . You have to go that way to Overton unless you go the Kingman route which is just as boring . Overton is a nice little tourist trap but you should enjoy it . If you came from Bullhead city to Oatman you should leave On old route 66 towards Kingman ( make sure you have a camera ) it has some awesome views , if you have time you could go to the HD dealer in Kingman AZ & check it out . You can reverse this trip if you would like to , either way it is a good ride , I like going to Kingman first & stopping @ Rosies resturant for breakfast .
I spend 6 months a year in Las Vegas . The rides I suggested are very enjoyable & you should not be disappointed . But I would recommend renting the bike for 2 days & making sure your camera is ready . Enjoy your trip & ride safe !!