About 20 miles south of Florence, go east on Lower Smith River Road http://maps.google.com/?ie=UTF8&ll=4...42701&t=h&z=15
This is BEFORE you cross the last bridge into Reedsport, but after the settlement of Gardiner. Stay on Lower Smith River Road which keeps you on or near the north bank of Smith River. Do not turn on North Fork Smith River Road. If you want to add a little more mileage (14 extra miles), you can turn left (north) on West Fork Smith River Road; this is a likely road to find a bear or two on (let me know if this interests you and I will provide details). When you reach the intersection of West Fork SRRd, you are 55 miles from Eugene and have two decent climbs ahead (cat 4 and cat 3). Stay on Lower Smith River Rd (at this point it is the obvious paved choice) until about a quarter mile past North Sister Rd (which has a sign indicating road closure in a few miles). At this point (1/4 mile past N. Sister Rd) continue straight onto South Sister Rd (a right turn would put you on Upper Smith River Rd, don't go there) I think this junction is 15 miles from the junction of West Fork Smith River Rd. Stay on South Sister Rd, it will quietly change its name to Oxbow Rd and take you to the Oxbow summit. Just stay on the pavement (slightly rough chipseal) and you can't go wrong. At the bottom of Oxbow summit (east end) you will find the Siuslaw river. 25 miles from the West Fork SSRD junction you will arrive at the Alma site; go straight here, which puts you on Siuslaw River Road. (If you look back at this intersection you will see a giant BLM map of the area. I will try to upload it for you and post it.) Within the next mile or two you will pass the Sheriff's Forest Work Camp and then a junction where right takes you to Lorane and left starts you up your last big climb (cat3) towards Eugene. Obviously you go to the left here and are 28 miles from Eugene. This road (Wolf Creek Rd) ends at Territorial just south of Crow Rd. Crow Rd brings you on in.

Once you turn onto Lower Smith River Road, there is only one small store that you will pass. It is best to have some means of filtering water since there is no guaranteed source of clean water (lots of creeks and weeping rocks) unless you are going to ride hard and dry. I have often ridden very long distances along and near this road without being passed by a car (up to 90 miles at a time), thus it is my favorite place to ride. There are lots of places to camp along the Smith River, most of them are unofficial but obvious.

DO NOT ATTEMPT TO RIDE HWY126 ALL THE WAY FROM FLORENCE TO EUGENE! Okay, that was a little harsh, but 126 sucks. The best part is the 14 miles to Mapleton because it has a shoulder, but forget about the rest. If you decide to do this, at least turn onto hwy 36 at Mapleton (if you can handle a bit of gravel, there is a nice way from Swiss Home to Alma)

I'll dig up the picture of the BLM map at Alma as soon as I can. Have fun, this is a highlight kind of road, but you are on your own out there. Let me know when you will be there and I may be able to sneak out and ride a bit of it with you. I'm a bit slowed down at the moment (I'm sure the ladder I fell off of moved, except that it is screwed into the wall.). But I'm back on wheels and always game for an excuse to ride the O&C roads.