Can you share any info? Perhaps GPS coordinates of the trailhead?
Bivouac is your best bet. Lots of gps coordinates there. Trip reports and trails. Search on keywords Darling, Manic or Mamquam. Download and upload coordinates.
49.75201,-122.93461=Park Car at Gate parking area 800m (2625')
49.76228,-122.92550=End of lower road on map
49.76172,-122.92514=End of lower road, start connexctor trail
49.76087,-122.92205=Hit the upper road 915m (3002')
49.76153,-122.92102=Turn right onto eastmost road (ignore left branch)
49.76829,-122.91439=End of old "East" Road (Spur S2) 980m (3215')
49.76789,-122.91175=log across Paranoid Creek 1020m (3346')
49.77136,-122.88866=down to outlet stream 1600m (5249')
49.77065,-122.88813=*Camp on W side of Darling lake 1600m (5249')
49.76828,-122.88890=On crest of ridge 1720m (5643')
49.76274,-122.88219=Main West summit of Manic Peak 1959m (6427')
49.77118,-122.88798=Back at stream outlet, near camp 1620m (5315')