There are 5 different tours starting at Union Hall, all marked with different signs (arrows).

http://unionhallwalks.ie/union-hall-main-map/

Best rated and most walked: Three Island (see AllTrails): Respective arrow (sign) is dark blue.

Highlights are the great views and different landscapes. Tour can be run all season. Roads are not very busy.

Weissmies via the South Ridge is one of the few 4000m peaks of Switzerland that can be run without any gear if the conditions allow for it, which makes for an incredibly worthwile mountain run.

Starting from the town square of Saas Almagell at about 1670m, the uphill starts right behind the houses. The trail is very runnable up to after the Almageller Hut (SAC) where it gets a bit steeper. The last part is a really good climb leading to the final snowy summit ridge.

From the trailhead, it is 4.5 miles to the summit with an elevation gain of
close to 4200 feet. Early spring might be problematic due to snow conditions so you might consider saving this for summer conditions.

A day you will not soon forget, the Fin is an absolute gem and is world class for a feature at it's grade in the alpine. Here you have a blade of granite containing several distinct peaks jetting out of the beautiful alpine meadows above Harrison Lake and the Beehive Lakes. All in all, you will climb 5 peaks in a day, with the middle peak containing some vertigo inducing exposure. Don't underestimate this route, there is more 5th class climbing than you would think and the Fin is extremely exposed although with some route finding it goes around 5.4.

Esker:  A long, narrow, steep-sided ridge of coarse sand and gravel deposited by a stream flowing in or under a melting sheet of glacial ice.