BT,
I agree with TT. Go to a local feed mill and buy clover.

Don't buy it in prepackaged bags at a store. Suggest a mix of mammoth red and white dutch clovers. If you can find it, I'd also toss in a couple pounds of yellow blossom sweet clover. The red/ white will get you long lasting clover on those trails, and the sweet clover will grow 3-4 feet tall for travel lanes bu tit will disappear fairly quickly in your area. For this type of seeding you can put on a mix ( red/white/sweet clover) of 6# per acre ( 2# of each), and get a very good stand. Many folks will tell you to use more, BUT..it IMHO, it is a waste of $$.

Clover establishes itself very well at lesser seed rates.

I would also do like TT suggests, get out there as son as the snow is gone, and seed it on the frozen/thawing ground. You can put it on with a hand spreader, just turn it down so you JUST start to see the seed come out. If you can see a lot of seed coming out, you are planting way too heavy. Note : For a 10 ft wide trail one acre will be 4350 feet in length. The 6# mix should be less than $30.