Exit I-70 westbound directly after the Eisenhower Tunnel and park on the north side of the highway (11160').
From where you park, skin north about 0.8 miles. Coon Hill will be obvious on your left after about 0.4 miles. Gain the northeast ridge. This can be accomplished on skis or by bootpacking depending on the exact route chosen. Scramble southwest towards the ridge to summit Coon Hill.
Skins and skis are best for snow climbs in the spring. A pack with a good carry system will help during the scramble.
2.8 miles roundtrip
1217 vertical feet up