I'll weigh in as a college English professor who has taught Parker's novel in a course entitled "The Literature and Culture of Running."
I'd respond to your professor by invoking the spirit of the literary critic Leslie Fiedler. Parker's novel has some clunky writing in it, some feverish satire. It also has enough echoes of the sort of writers your professor (and I) might teach in our American literature surveys, especially Hemingway and Faulkner (Quenton = Quentin Compson, sort of), that it's easy to recognize Parker's own large ambitions, and to smirk and condescend to the fact that he doesn't quite have the chops to create Literature.
Except: Parker is writing from his own deep and deeply-felt experience AS a runner, and the feeling he brings to the journey that Quenton undergoes is palpable. Hard to believe this, but--and yes, I'll admit it--I'm actually tearing up thinking about the slow-building drama of that long winter and spring out in the woods. Fiedler would say that the novel succeeds DESPITE its stylistic infelicities and sometimes sophomoric humor (i.e., the mock trial sequence). Anybody who can't feel the power of the night Bruce disciples Quenton into the longest, hardest, life-beyond-death workout of his life just doesn't have a life, and needs to get one.
The novel succeeds because it calls on mythic energies, deep old life forces and death forces. It knows what they're about, and it knows how to structure the protagonist's engagement with them in an extremely satisfying way. Any serious runner who has ever been beaten up by the world and retreated to the discipline of running in an effort to transform himself (or herself), putting in long hours in the woodshed (so to speak) with an eye on emerging triumphant somewhere down the line, can sense that power. And it's why we love the novel. It is, in fact, a powerful work of literature. It's not a flawless work of art, but I'm just fine with that. I think it brilliantly achieves its primary purpose, which is to take us inside the body and soul of one talented young runner as he wrestles with his demons, and ours.
I don't know if Parker had made a study of Joseph Campbell's THE HERO WITH A THOUSAND FACES, but the novel tracks the hero's journey, as articulated by Cambell, amazingly well.
In the service of convincing your professor that he might want to give the novel a second look, here are some teaching notes from a few years back, cut and pasted. I'll start with the notes, then with a bunch of quotes from HERO that can, with a little thought, be applied to the novel. These are rough lecture notes, but they should convince anybody that this is a novel worth assigning and discussing:
KEY THEMES for discussion in Once a Runner
1) TIME: the various ways in which time is represented as an element of runner’s lives
--Quenton Cassidy is named after Quentin Compson, one of Faulkner’s major protagonists:
--“the numbersâ€: personal records (PR’s) as a badge of personal identity. These also place the runner in a relationship with historical time—the many runners from the past who have run fast times at the same distance
--the three seasons of the competitive runner: cross-country, winter track, outdoor track. These seasons structure the novel’s plot—it starts in the fall and ends in the spring—and they help structure Quenton’s quest
--race-time: the drama, the experiential challenge, of pushing yourself to the limit within the unforgiving frame of a clock-focused athletic event
--training time: the long foreground to the exceptional performance—PR, race-time—is a different kind of time-cycle. The “trial of miles†is also a trial of an endless sequence of training days, of seasons
--historical time: we’re connected to this in various ways, and this sort of time interacts with the other sorts of time
 
2) RUNNING AS A CULT/COUNTERCULTURE IN CONFLICT WITH “OFFICIAL†CULTURE
--What is official culture and who are its representatives? [“conservative†but cynical and hypocritical; racist; football-focused; running-ignorant; anti-student sex (but pro adultery: DD sleeps with his secretary)
--Dick Doobey
--SU President, Steven Prigman
--Ben Cornwall, coach of track team
--“ridingâ€: the honor system at the University
--the amateur system represented by the AAU (Denton talks about this)
--America as Vietnam Warmaking machine
--How do Quenton and the others contest the System?
--general mockery
--Quentin’s poster against war, premarital sex, pot smoking, and other tokens of general American countercultural identity (177)
--renaming themselves with foreign names; creating an alternate reality:
--setting up their own alternative “honor court†to prosecute Jack Nubbins
--Spider getting high and staging an evening “jumpâ€: transforming a form of play that has been slowly transformed into work (administered, professionalized) back into play
--the petition that ends up getting QC booted off team
--rejecting mainstream images of masculinity and the good life (i.e., suburbanized, flavorless, unheroic life) in favor of a deeper, larger, more heroic conception of life; transforming themselves from bored accomplices of over-administered, prosaic reality into figures from myth
 
3) an outgrowth of #2: RUNNING AS A PHILOSOPHICAL ORIENTATION, A FORM OF SPIRITUAL PRACTICE
--key definitional act: differentiating the members of the cult from other, lesser beings, especially every form of recreational runner, but also other kinds of athletes
--“the Secret†vs. the “trial of miles†and “breaking downâ€: a sustained spiritual exercise
--pain management: “then he obtained his mental abstracts†(25); “a white haze, a normal phenomenon†(26);
--the production of a “true runner
--non-normative orientation toward women is a part of the spiritual discipline:
--all the cult phrases and language: the Fixed Order, top dog syndrome, hierarchy of ferocity, the Task
--critique of mystification: “Cassidy sought no euphoric interludes…He ran not for crypto-religious reasons, but to win races.†(121)
 
4) QUENTIN AND THE MONOMYTH: THE RUNNER AS HERO
--Joseph Campbell, The Hero With a Thousand Faces
--the monomyth: a way of describing the hero’s journey by assembling bits and pieces of myths from around the world
--Quenton is a hero in the conventional sense: a gifted and fearless individual who leads by example and inspires others; a young man of beautiful form (albeit with an admixture of too-thinness)
--But Quenton is also a hero in the classic mythological sense: his life, as described in the second half of the novel (and beginning the moment he is booted as team captain), passes through many of the stages of the hero’s journey described by Campbell
--“Riderless horses in the fog…Do you suppose it’s an omen of some kind†(159)
--the hero’s struggle to redefine crisis as opportunity (with mentor’s help): “They’ve taken away….â€â€THEY have taken away nothing!†(166**)
From HERO WITH A THOUSAND FACES:
30: “The standard path of the mythological adventure of the hero is a magnification of the formula represented in the rites of passage: separation—initiation—return: which might be named the nuclear unit of the monomyth.
A hero ventures forth from the world of common day into a region of supernatural wonder: fabulous forces are there encountered and a decisive victory is won: the hero comes back from this mysterious adventure with the power to bestow boons on his fellow man.
--the call to adventure:
51: “Typical of the circumstances of the call are the dark forest, the great tree, the babbling spring, and the loathly, underestimated appearance of the carrier of the power of destiny.â€
55: “Whether dream or myth, in these adventures there is an atmosphere of irresistible fascination about the figure that appears suddenly as guide, marking a new period, a new stage, in the biography. That which has to be faced, and is somehow profoundly familiar to the unconscious—though unknown, surprising, and even frightening to the conscious personality—makes itself known; and what was formerly meaningful may become strangely emptied of value
58: **â€The first stage of the mythological journey—which we have designated the ‘call to adventure’—signifies that destiny has summoned the hero and transferred his spiritual center of gravity from within the pale of his society to a zone unknown. This fateful region of both treasure and danger may be variously represented: as a distant land, a forest, a kingdom underground, beneath the waves, or above the sky, a secret island, lofty mountaintop, or profound dream state; but it is always a place of fluid and polymorphous beings, unimaginable torments, superhuman deeds, and impossible delight.â€
--refusal of the call
59: “Often in actual life, and not infrequently in the myths and popular tales, we encounter the dull case of the call unanswered; for it is always possible to turn the ear to other interests. Refusal of the summons converts the adventure into its negative. Walled in boredom, hard work, or ‘culture,’ the subject loses the power of significant affirmative action and becomes a victim to be saved. His flowering world becomes a wasteland of dry stones and his life feels meaningless….â€
69: “For those who have not refused the call, the first encounter of the hero-journey is with a protective figure (often a little old crone or old man) who provides the adventurer with amulets against the dragon forces he is about to pass.â€
77: “With the personifications of his destiny to guide and aid him, the hero goes forward in his adventure until he comes to the ‘threshold guardian’ at the entrance to the zone of magnified power.â€
81: “The Arcadian god Pan is the best known Classical example of this dangerous presence dwelling just beyond the protected zone of the village boundary….He was the inventor of the Shepherd’s pipe, which he played for the dance of the nymphs, and the satyrs were his male companions. The emotion that he instilled in human beings who by accident adventured into his domain was ‘panic’ fear, a suddenly groundless fright.â€
90-91: “The Belly of the Whaleâ€: “The idea that the passage of the magical threshold is a transit into a sphere of rebirth is symbolized in the worldwide womb image of the belly of the whale. The hero, instead of conquering or conciliating the power of the threshold, is swallowed into the unknown, and would appear to have died…[T]he lesson [is] that the passage of the threshold is a form of self-annihilation…nstead of passing outward, beyond the confines of the visible world, the hero goes inward, to be born again.†[three sets of 20 quarters]
97: THE ROAD OF TRIALS [like the “trial of miles†or “miles of trialsâ€]
“Once having traversed the threshold, the hero moves in a dream landscape of curiously fluid, ambiguous forms, where he must survive a succession of trials. This is a favorite phase of the myth-adventure. It has produced a world literature of miraculous tests and ordeals. The hero is covertly aided by the advice, amulets, and secret agents of the supernatural helper whom he met before his entrance into this region. Or it may be that he here discovers for the first time that there is a benign power everywhere supporting him in his superhuman passage.â€
***101: “In the vocabulary of the mystics, this is the second stage of the Way, that of the ‘purification of the self,’ when the senses are “cleansed and humbled,’ and the energies and interests ‘concentrated upon transcendental things’; or in a vocabulary of a more modern turn: this is the process of dissolving, transcending, or transmuting the infantile images of our personal past.â€
[connect with his memory of having died as a boy swimming in the sea]
109: THE MEETING WITH THE GODDESS
“The ultimate adventure, when all the barriers and ogres have been overcome, is commonly represented as a mystical marriage of the triumphant hero-soul with the Queen Goddess of the World. This is the crisis at the nadir, the zenith, or at the uttermost edge of the earth, at the central point of the cosmos, in the tabernacle of the temple, or within the darkness of the deepest chamber of the heart.â€
136: ATONEMENT WITH THE FATHER [Bruce Denton as father figure / mentor; but don’t forget: Quenton has a father, who shows up powerfully in his flashback: he cries on his father’s shoulder there as he cries after the Big Workout]
“The traditional idea of initiation combines an introduction of the candidate into the techniques, duties, and prerogatives of his vocation with a radical readjustment of his emotional relationship to the parental images. The mystagogue (father or father-substitute) is to entrust the symbols of office only to a son who has been effectually purged of all inappropriate infantile cathexes—for whom the just, impersonal exercise of the powers will not be rendered impossible by unconscious (or perhaps even conscious and rationalized) motives of self-aggrandizement, personal preference, or resentment.â€
190: “The agony of breaking through personal limitations is the agony of spiritual growth. Art, literature, myth and cult, philosophy, and ascetic disciplines are instruments to help the individual past his limiting horizons into spheres of ever-expanding realizations.â€
193: THE RETURN
“When the hero-quest has been accomplished, through penetration to the source, or through the grace of some male or female, human or animal, personification, the adventurer still must return with his life-transmuting trophy. The full round, the norm of the monomyth, requires that the hero shall now begin the labor of bringing the runes of wisdom, the Golden Fleece, or his sleeping princess, back into the kingdom of humanity, where the boon may redound to the renewing of the community, the nation, the planet, or the ten thousand worlds.â€
217: THE CROSSING OF THE RETURN THRESHOLD
“The two worlds, the divine and the human, can be pictured only as distinct from each other—different as life and death, as day and night. The hero adventures out of the land we know into darkness; there he accomplishes his adventure, or again is simply lost to us, imprisoned, or in danger; and his return is described as a coming back out of that yonder zone. Nevertheless—and here is a great key to the understanding of myth and symbol—the two kingdoms are actually one. The realm of the gods is a forgotten dimension of the world we know. And the exploration of that dimension, either willingly or unwillingly, is the whole sense of the deed of the hero.