If you have 4WD, drive on the Lincoln Creek road past the Lincoln Gulch Campground as though heading for Grizzly Reservoir, but after about 3.9 miles, stop and park at a trailhead location for Tabor Creek. If you don't have 4WD or ATV, you'll either have to walk this extra distance or bring a mountain bike. Either choice will make your day significantly longer.
Find a way across Lincoln Creek. We used a series of fallen trees (See photo), but if they're no longer there, you may need to wade. In early season, this can be problematic with high runoff. Once across, head up on the trail which is found on the east side of Tabor Creek. In less than a half mile, you'll cross the New York Collection Canal, and shortly after that, the trail crosses to the west side of Tabor Creek, again posing a possible crossing problem.
Once across, the good trail heads south, always staying on the west side of the drainage. Continue to the south side of a group of trees at about 11,600 feet elevation. Leave the trail and head NW, working your way up the steep slope and through open trees to a bench area below and directly east of Tabor Lake. In July, this bench has abundant wildflowers. The creek that drains Tabor Lake cascades down and passes across two large cave-like openings in the rocky cliff. At this bench location, you should be able to spot a trail coming in from the south. Join it and continue following the trail all the way up to Tabor Lake. The lake has a beautiful color and sits right on the edge of the shelf, offering opportunities for spectacular photos.
From the lake, head up an easy, shallow, tundra and scree type gully/slope west to the saddle between Tabor and Pt.13,026. We observed elk on this high ridge. At the saddle, head south again following the ridge crest. From this point on, you'll be on either broken rock or boulders. Remaining on the ridge crest is usually the best option, though at one point, we got over on the west side and just a little below the crest. There are a couple of sections where the ridge crest narrows to only a few feet wide. At one point, it's only about a foot wide. There is some exposure in these sections but the rock, though loose, is generally reliable. If the rock is wet, this could be a lot more intimidating. Most all of this is Class 2+ with perhaps a few 3rd class moves depending on your exact route. Continue to the rocky summit and peer back down to Tabor Lake, now far below. It took us about an hour from the lake to make the summit.
For the return trip, follow the same route back down to the lake. If time allows, linger at the lake and enjoy the view and wildflowers. Descend back down the trail to the bench below the lake. If you wish to continue on trail, follow it through the lush wildflowers and then contours along the bench south to a small tarn and then curves SE to intersect the main trail just a little below the small lake at 11,820 ft.
For an alternate route to Tabor, some hikers opt to gain the main north ridge a couple of miles north of the summit. See links provided for this route option.
Links to other information, routes & trip reports for this peak that may be helpful.