Portland Marathon Fueling Plan: Mile-by-Mile Strategy

Short version: carry your own carbohydrate, hold 75 to 90g per hour on a fixed clock, and take the first gel between miles 2 and 3, because there is no aid of any kind before mile 3. Portland has no signature hill and no sustained flat, which means it never hands you an obvious moment to fuel. If you wait for one, you will still be waiting at mile 22.

The marketing number is 873 feet of climbing on a net-zero loop out of Tom McCall Waterfront Park, start and finish elevation identical at 36 feet. That reads fast. The distribution is what actually shapes the race.

Those 873 feet arrive as eight or nine separate 50 to 100 foot blocks strung from mile 1 to mile 25. Nothing is big enough to plan a race around and nothing leaves you alone for long. Miles 3 through 8 are the one genuinely low-effort stretch, and they are rolling and net downhill rather than flat. After mile 8, the longest uninterrupted flat running left in the race is the 0.9 miles of Reed College Place, miles 16.4 to 17.3.

The aid station spacing runs backwards

Eighteen stations. Every two miles from 3 to 15, then every mile from 16 through 26. Nothing before mile 3.

Lay that over the elevation profile and the mismatch is hard to miss. The two longest climbs on the course, 106 feet up Lair Hill to the mile 9.2 crest and 78 feet up Bybee and Crystal Springs after mile 15, both sit in the half-served two-mile zone, as does the Sellwood Bridge bluff. Then the course switches to a station every mile for the closing stretch, which is the flattest and least demanding part of the day.

So you carry more through the middle of this race than the station map implies. Start early: your first gel goes down between miles 2 and 3, coming off the 178 foot course high point on West Burnside above NW 23rd, timed so you hit the mile 3 station on NW Kearney with fluid to chase it.

Miles 3 to 8: bank here or do not bank at all

From that high point the course gives back 145 feet through the Pearl District down to river level at mile 5, lifts about 76 feet over the Broadway Bridge into the Rose Quarter at 5.9, returns the same 76 on the way back, then settles onto Naito Parkway between 32 and 39 feet from mile 6.8 to 8.3.

None of that is flat. All of it is cheap. Your heart rate is low, your stomach is as willing as it will be all morning, and stations at 5 and 7 bracket the bridge loop. Get one gel in ahead of the Broadway climb and another once you are back on Naito. This is the closest thing Portland has to a loading window, and it closes at mile 8.

One logistical note worth planning around: you run straight past the finish line just after mile 8. Nowhere else on the course is easier for someone to reach you, so if anyone is handing you bottles or spare gels, that is the spot.

Miles 8 to 11: the climb that catches everyone

At 8.3 the course turns south down SW 1st Avenue, runs onto Ross Island Way, and starts up Kelly Avenue through Lair Hill beneath the aerial tram. It gains about 106 feet before cresting at 9.2, the second-longest sustained climb of the day.

What makes it expensive is the sequencing. It begins the moment the easiest running on the course ends, so you arrive at the base carrying pace you have not had to work for. Do not put a gel into it. Take the cup at mile 9 on the crest, then spend the 100 foot descent to Macadam and the flat South Waterfront miles at 10 to 11.2 getting carbohydrate down. Mile 11 on Macadam is the last uncomplicated station before the river crossing.

Miles 12 to 15: halfway is uphill

You cross the Sellwood Bridge around 12.1, then climb the bluff via SE Tacoma and SE 7th. The result is that the 13.1 marker sits at roughly 119 feet, about 75 feet above the Macadam running of a mile earlier. Halfway at Portland arrives near the top of a climb, which is worth knowing before you read anything into your split.

Audit yourself there anyway, in grams rather than packets. At 75 to 90g per hour you want to be somewhere around 140 to 170 grams by the half. Divide by whatever you are actually carrying to get your count, and check it against the fueling calculator before race week instead of doing the arithmetic at mile 13. If you are behind, the 62 feet the course returns over the gradual Sellwood descent to mile 15, plus the stations at 13 and 15, is the last comfortable place to make it up.

Miles 15 to 20: where the elevation chart lies

The course climbs 78 feet from mile 15 over the Bybee railroad tracks and up Crystal Springs Blvd past the golf course, then flattens onto Reed College Place. Then comes the part no per-mile chart will show you. Mile 18 by itself contains an 80 foot drop into the Reed College campus and a 51 foot climb back out of it. Net, it looks like nothing. Run, it is not.

Knowing that in advance is most of the fix. Reed College Place at 16.4 to 17.3 is the quietest, flattest running you have left, and stations now come every mile. Put a gel down around mile 17, ahead of the campus loop rather than inside it. The one after that belongs at the mile 19 station on Lambert, taken at the top, before the 77 foot descent on Bybee toward 20.4.

Miles 20 to 26: one more pitch

Milwaukie Avenue rolls 35 feet up through Brooklyn to mile 21.8 and hands back 31. Then, a little past 22.4, the course asks for its steepest grade since the opening three miles: roughly 47 feet up SE Franklin Street to McLoughlin Boulevard inside about a third of a mile.

Take your final gel before that, at the mile 22 station on Milwaukie, while you are still on the flat. What follows is generous. The course sheds 80 feet down to the Eastbank Esplanade and runs level along the river past OMSI and beneath the Marquam, with stations at 23 and 24 if you want fluid. A 28 foot ramp up NE Couch puts you on the Burnside Bridge just short of mile 25, and from there it is downhill and flat into Waterfront Park.

On-course products: read the labels before race day

Portland is unusual here, in a way that works in your favor if you plan for it.

The drink. Skratch Labs Lemon Lime runs 19 grams of carbohydrate and 400 milligrams of sodium per 16 ounce serving. The sodium is among the highest of any on-course drink at a major American marathon. The carbohydrate is ordinary. Pour that into a four to six ounce race cup and you get roughly 5 to 7 grams of carbohydrate against 100 to 150 milligrams of sodium, which tells you how to use it: Skratch covers sodium, you cover carbohydrate. Size the sodium side against your own sweat rate with the hydration calculator.

The gel. Crank Sports e-Gel carries 37 grams of carbohydrate and 230 milligrams of sodium, roughly half again what a standard 25g gel delivers. The 2026 course chart puts it at the mile 5, 7, 13, 16, 20, 22 and 25 stations. It also carries a caffeine trap: two of the four flavors on course, Electric Cola and Orange You Glad, are Turbo flavors with 50 milligrams of caffeine each, while Vanilla Strawberry Slam and Radical Raspberry are caffeine-free. If you are already running caffeinated gels of your own, read the packet before you take a second dose. To see how e-Gel stacks up against what you normally carry, the gel comparison tool lays the numbers side by side.

Weather: mostly an advantage

Fifteen year average start is 51°F at 87 percent humidity, with a 7:15 gun going off essentially at sunrise. Those are good absorption conditions, and they argue for the top of the 75 to 90g range rather than the bottom.

Two things to watch. Race day highs average 71°F and starts have ranged from 42 to 61, so a warm year is possible. If you get one, add 15 to 20 percent to your fluid from mile 9 on, since Eastmoreland and the Reed miles offer the least shade on the course. And there is roughly a one in four chance of rain. If it is wet, tear every gel tab before the gun. Cold wet fingers and a foil corner at mile 22 is how a gel you needed goes untaken.

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