Grandma's Marathon: Course, Route Profile & Map

Course & Elevation

The start sits south of Two Harbors on Scenic Drive, hemmed in by woods and private land on one side and railway tracks and Lake Superior on the other. From there the course runs roughly 30 kilometres along the shore as North Shore Drive and Congdon Boulevard before turning onto London Road and then Superior Street in Duluth. From 222 metres at the start to 185 at the finish - flat on paper, 3.7 vertical metres per kilometre, with 70 percent of the distance in the level band.

Smooth it is not. The first half gives away 113 metres of descent against only 79 metres of climb, rolling constantly in eight-to-eleven-metre waves. The second half evens out (78 metres up, 81 down), and at kilometre 35 comes Lemon Drop Hill: about 17 metres over a little more than a kilometre, averaging 1.4 percent. As a hill that is nothing. As the largest single rise on the course, arriving after 34 kilometres, it is everything.

From there Superior Street carries you through downtown and down into Canal Park, where the finish stands beside Grandma's Saloon & Grill - the restaurant that put up almost the entire budget of the first race in 1977 and gave the marathon its name. About 150 people ran that year, ten of them women; today race weekend draws more than 20,000. Garry Bjorklund, who won the first edition, summed it up: you start in the middle of the woods, run along Lake Superior, and finish at a pub.

Pacing Strategy

This course hands out its gift early, and that is where most goal times die. Over the first 21 kilometres the road gives away more than 110 vertical metres, evenly spread and never steep enough to slow you down. Take that as free speed and you will run it clearly too fast - and pay for it not in aerobic terms but in your quadriceps. Run the first half on effort, not on the watch.

The race is decided between kilometre 30 and 38. Lemon Drop Hill at 1.4 percent is not a mountain, but it meets legs that have braked 113 metres of descent. The classic trap is attacking it at your usual rhythm and dropping into a hole the last seven kilometres never let you climb out of. Plan for a slightly higher effort at unchanged pace, and take the gradient back through the city streets at the end.

The third factor is the lake. The water is on your left the whole way, the wind usually comes off it, and the shore road stays cooler than inland. Usually. The organiser names severe heat and humidity explicitly as grounds for shortening or cancelling a race, and if you are in Corral C you start at 08:10 - a good half hour further into the sun than the elite field. Drink early and build your fuelling plan around the warmest realistic day, not the nicest one.

Training plan for Grandma's Marathon: 12-week build

For an age-group runner the effort lasts roughly three to five hours, against a seven-hour time limit. The demand is steadily aerobic: 70 percent of the course is level, there is no ramp that forces you anaerobic and no technical section that costs concentration. That is exactly what makes this a pace race - holding marathon pace steady for hours matters far more here than climbing strength.

The real muscular demand is downhill running. 194 metres of descent against 158 of climb, and more than half of that descent falls in the first half of the race. Train only on flat loops and you arrive at Lemon Drop Hill with unprepared eccentric loading. Build long runs with a net-descending profile, and practise running downhill at controlled pace rather than falling into it.

For the decisive stretch from kilometre 30 there is one specific session worth having: a short, shallow rise of one to one and a half kilometres, run at marathon pace at the end of a long run. Lemon Drop Hill does not ask for power, it asks you to hold cadence on tired legs.

Mid-June on the North Shore means anything is possible. The organiser recommends throwaway layers at the start because it can be cold and damp there at 07:45, and reserves the right to shorten or cancel in heat and humidity. Prepare for both: a handful of heat sessions in the final four weeks, and start-line kit you are willing to leave behind. Logistics belong in the plan too - the only way to the start is the official bus or the North Shore Scenic Railroad, which means an early departure and a long wait before the gun.